diff --git a/go/robot-simulator/robot.go b/go/robot-simulator/robot.go
new file mode 100644
index 0000000..3210255
--- /dev/null
+++ b/go/robot-simulator/robot.go
@@ -0,0 +1,148 @@
+package robot
+
+import "fmt"
+
+const testVersion = 3
+
+// Stuff added for step 1
+const (
+	N = iota
+	E
+	S
+	W
+	ErrDir
+)
+
+func Advance() {
+	switch Step1Robot.Dir {
+	case N:
+		Step1Robot.Y++
+	case E:
+		Step1Robot.X++
+	case S:
+		Step1Robot.Y--
+	case W:
+		Step1Robot.X--
+	}
+}
+
+func Left() {
+	switch Step1Robot.Dir {
+	case N:
+		Step1Robot.Dir = W
+	case E:
+		Step1Robot.Dir = N
+	case S:
+		Step1Robot.Dir = E
+	case W:
+		Step1Robot.Dir = S
+	}
+}
+
+func Right() {
+	switch Step1Robot.Dir {
+	case N:
+		Step1Robot.Dir = E
+	case E:
+		Step1Robot.Dir = S
+	case S:
+		Step1Robot.Dir = W
+	case W:
+		Step1Robot.Dir = N
+	}
+}
+
+func (d Dir) String() string {
+	switch d {
+	case N:
+		return "N"
+	case E:
+		return "E"
+	case S:
+		return "S"
+	default:
+		return "W"
+	}
+}
+
+// Stuff added for step 2
+type Action byte
+
+func StartRobot(cmd chan Command, act chan Action) {
+	fmt.Println("Starting Robot")
+	for {
+		fmt.Println("Waiting for command")
+		j, more := <-cmd
+		fmt.Println("Received a Command:", j)
+		if more {
+			// Received a command, try to act in the room
+			act <- Action(j)
+		}
+	}
+	fmt.Println("Robot Done")
+}
+
+func Room(extent Rect, robot Step2Robot, act chan Action, rep chan Step2Robot) {
+	fmt.Println("Starting Room")
+	for {
+		j, more := <-act
+		if more {
+			// Received an action, try to perform it
+			if j == 'R' { // Turn Right
+				switch robot.Dir {
+				case N:
+					robot.Dir = E
+				case E:
+					robot.Dir = S
+				case S:
+					robot.Dir = W
+				case W:
+					robot.Dir = N
+				}
+			} else if j == 'L' { // Turn Left
+				switch robot.Dir {
+				case N:
+					robot.Dir = W
+				case E:
+					robot.Dir = N
+				case S:
+					robot.Dir = E
+				case W:
+					robot.Dir = S
+				}
+			} else if j == 'A' { // Advance
+				switch robot.Dir {
+				case N:
+					if robot.Pos.Northing < extent.Max.Northing {
+						robot.Pos.Northing++
+					} else {
+						fmt.Println("Hit North Wall")
+					}
+				case E:
+					if robot.Pos.Easting < extent.Max.Easting {
+						robot.Pos.Easting++
+					} else {
+						fmt.Println("Hit East Wall")
+					}
+				case S:
+					if robot.Pos.Northing > extent.Min.Northing {
+						robot.Pos.Northing--
+					} else {
+						fmt.Println("Hit South Wall")
+					}
+				case W:
+					if robot.Pos.Easting > extent.Min.Easting {
+						robot.Pos.Easting--
+					} else {
+						fmt.Println("Hit West Wall")
+					}
+				}
+			}
+		} else {
+			// Done, report back
+			rep <- robot
+		}
+	}
+	close(rep)
+	fmt.Println("Room Done")
+}
diff --git a/go/robot-simulator/robot_simulator_step2_test.go b/go/robot-simulator/robot_simulator_step2_test.go
index 539da87..1014f89 100644
--- a/go/robot-simulator/robot_simulator_step2_test.go
+++ b/go/robot-simulator/robot_simulator_step2_test.go
@@ -2,7 +2,10 @@
 
 package robot
 
-import "testing"
+import (
+	"fmt"
+	"testing"
+)
 
 // For step 1 you implement robot movements, but it's not much of a simulation.
 // For example where in the source code is "the robot"?  Where is "the grid"?
@@ -72,7 +75,9 @@ func TestStep2(t *testing.T) {
 		rep := make(chan Step2Robot)
 		go StartRobot(cmd, act)
 		go Room(Rect{Pos{1, 1}, Pos{2, 2}}, test2[0].Step2Robot, act, rep)
+		fmt.Println("Starting Tests")
 		for j := 1; j < i; j++ {
+			fmt.Println("Channeling: ", test2[j])
 			cmd <- test2[j].Command
 		}
 		close(cmd)
diff --git a/go/space-age/README.md b/go/space-age/README.md
new file mode 100644
index 0000000..ab30bd3
--- /dev/null
+++ b/go/space-age/README.md
@@ -0,0 +1,54 @@
+# Space Age
+
+Given an age in seconds, calculate how old someone would be on:
+
+   - Earth: orbital period 365.25 Earth days, or 31557600 seconds
+   - Mercury: orbital period 0.2408467 Earth years
+   - Venus: orbital period 0.61519726 Earth years
+   - Mars: orbital period 1.8808158 Earth years
+   - Jupiter: orbital period 11.862615 Earth years
+   - Saturn: orbital period 29.447498 Earth years
+   - Uranus: orbital period 84.016846 Earth years
+   - Neptune: orbital period 164.79132 Earth years
+
+So if you were told someone were 1,000,000,000 seconds old, you should
+be able to say that they're 31.69 Earth-years old.
+
+If you're wondering why Pluto didn't make the cut, go watch [this
+youtube video](http://www.youtube.com/watch?v=Z_2gbGXzFbs).
+
+## No Stub
+
+This may be the first Go track exercise you encounter without a stub: a
+pre-existing `space_age.go` file for your solution. You may not see stubs in
+the future and should begin to get comfortable with creating your own Go files
+for your solutions.
+
+One way to figure out what the function signature(s) you would need is to look
+at the corresponding \*\_test.go file. It will show you what the package level
+functions(s) should be that the test will use to verify the solution.
+
+
+## Running the tests
+
+To run the tests run the command `go test` from within the exercise directory.
+
+If the test suite contains benchmarks, you can run these with the `-bench`
+flag:
+
+    go test -bench .
+
+Keep in mind that each reviewer will run benchmarks on a different machine, with
+different specs, so the results from these benchmark tests may vary.
+
+## Further information
+
+For more detailed information about the Go track, including how to get help if
+you're having trouble, please visit the exercism.io [Go language page](http://exercism.io/languages/go/about).
+
+## Source
+
+Partially inspired by Chapter 1 in Chris Pine's online Learn to Program tutorial. [http://pine.fm/LearnToProgram/?Chapter=01](http://pine.fm/LearnToProgram/?Chapter=01)
+
+## Submitting Incomplete Solutions
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.
diff --git a/go/space-age/cases_test.go b/go/space-age/cases_test.go
new file mode 100644
index 0000000..bf8bed8
--- /dev/null
+++ b/go/space-age/cases_test.go
@@ -0,0 +1,61 @@
+package space
+
+// Source: exercism/problem-specifications
+// Commit: 8d4df79 space-age: Apply new "input" policy
+// Problem Specifications Version: 1.1.0
+
+var testCases = []struct {
+	description string
+	planet      Planet
+	seconds     float64
+	expected    float64
+}{
+	{
+		description: "age on Earth",
+		planet:      "Earth",
+		seconds:     1000000000,
+		expected:    31.69,
+	},
+	{
+		description: "age on Mercury",
+		planet:      "Mercury",
+		seconds:     2134835688,
+		expected:    280.88,
+	},
+	{
+		description: "age on Venus",
+		planet:      "Venus",
+		seconds:     189839836,
+		expected:    9.78,
+	},
+	{
+		description: "age on Mars",
+		planet:      "Mars",
+		seconds:     2329871239,
+		expected:    39.25,
+	},
+	{
+		description: "age on Jupiter",
+		planet:      "Jupiter",
+		seconds:     901876382,
+		expected:    2.41,
+	},
+	{
+		description: "age on Saturn",
+		planet:      "Saturn",
+		seconds:     3000000000,
+		expected:    3.23,
+	},
+	{
+		description: "age on Uranus",
+		planet:      "Uranus",
+		seconds:     3210123456,
+		expected:    1.21,
+	},
+	{
+		description: "age on Neptune",
+		planet:      "Neptune",
+		seconds:     8210123456,
+		expected:    1.58,
+	},
+}
diff --git a/go/space-age/space_age_test.go b/go/space-age/space_age_test.go
new file mode 100644
index 0000000..71f7359
--- /dev/null
+++ b/go/space-age/space_age_test.go
@@ -0,0 +1,25 @@
+package space
+
+import (
+	"math"
+	"testing"
+)
+
+func TestAge(t *testing.T) {
+	const precision = 0.01
+	for _, tc := range testCases {
+		actual := Age(tc.seconds, tc.planet)
+		if math.IsNaN(actual) || math.Abs(actual-tc.expected) > precision {
+			t.Fatalf("FAIL: %s\nExpected: %#v\nActual: %#v", tc.description, tc.expected, actual)
+		}
+		t.Logf("PASS: %s", tc.description)
+	}
+}
+
+func BenchmarkAge(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		for _, tc := range testCases {
+			Age(tc.seconds, tc.planet)
+		}
+	}
+}
diff --git a/kotlin/hello-world/.gradle/4.8/fileChanges/last-build.bin b/kotlin/hello-world/.gradle/4.8/fileChanges/last-build.bin
new file mode 100644
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new file mode 100644
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new file mode 100644
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diff --git a/kotlin/hello-world/.gradle/4.8/fileHashes/resourceHashesCache.bin b/kotlin/hello-world/.gradle/4.8/fileHashes/resourceHashesCache.bin
new file mode 100644
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diff --git a/kotlin/hello-world/.gradle/4.8/taskHistory/taskHistory.bin b/kotlin/hello-world/.gradle/4.8/taskHistory/taskHistory.bin
new file mode 100644
index 0000000..bc6fc58
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diff --git a/kotlin/hello-world/.gradle/4.8/taskHistory/taskHistory.lock b/kotlin/hello-world/.gradle/4.8/taskHistory/taskHistory.lock
new file mode 100644
index 0000000..1b83c19
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diff --git a/kotlin/hello-world/.gradle/buildOutputCleanup/buildOutputCleanup.lock b/kotlin/hello-world/.gradle/buildOutputCleanup/buildOutputCleanup.lock
new file mode 100644
index 0000000..6e44707
Binary files /dev/null and b/kotlin/hello-world/.gradle/buildOutputCleanup/buildOutputCleanup.lock differ
diff --git a/kotlin/hello-world/.gradle/buildOutputCleanup/cache.properties b/kotlin/hello-world/.gradle/buildOutputCleanup/cache.properties
new file mode 100644
index 0000000..f4b5f8a
--- /dev/null
+++ b/kotlin/hello-world/.gradle/buildOutputCleanup/cache.properties
@@ -0,0 +1,2 @@
+#Thu Jun 21 08:10:45 CDT 2018
+gradle.version=4.8
diff --git a/kotlin/hello-world/.gradle/buildOutputCleanup/outputFiles.bin b/kotlin/hello-world/.gradle/buildOutputCleanup/outputFiles.bin
new file mode 100644
index 0000000..f3b2e16
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diff --git a/kotlin/hello-world/.gradle/vcsWorkingDirs/gc.properties b/kotlin/hello-world/.gradle/vcsWorkingDirs/gc.properties
new file mode 100644
index 0000000..e69de29
diff --git a/kotlin/hello-world/GETTING_STARTED.md b/kotlin/hello-world/GETTING_STARTED.md
deleted file mode 100644
index 06b4f55..0000000
--- a/kotlin/hello-world/GETTING_STARTED.md
+++ /dev/null
@@ -1,50 +0,0 @@
-----
-# Quick Start Guide
-
-This guide picks-up where [Running the Tests (in Kotlin)](http://exercism.io/languages/kotlin/tests)
-left off.  If you haven't reviewed those instructions, do so now.
-
-Need more information?  A **step-by-step tutorial** is available in this directory at TUTORIAL.md or you can read
-the [HTML version](https://github.com/exercism/kotlin/blob/master/exercises/hello-world/TUTORIAL.md).
-
-The following instructions work equally well on Windows, Mac OS X and Linux.
-
-## Solve "Hello World"
-
-Try writing a solution that passes one test at a time, running Gradle each time:
-
-
-```
-$ gradle test
-```
-
-## Iterate through the tests
-
-After your first test passes, remove the `@Ignore` from the next test, and iterate on your solution,
-testing after each change.
-
-## All the tests pass?  Submit your solution!
-
-With a working solution that we've reviewed, we're ready to submit it to
-exercism.io.
-
-```
-$ exercism submit src/main/kotlin/HelloWorld.kt
-```
-
-## Next Steps
-
-From here, there are a number of paths you can take.
-
-1. Move on to the next exercise
-2. Review (and comment on) others' submissions to this exercise
-3. Submit another iteration
-4. Contribute to Exercism
-
-
-We sincerely hope you learn and enjoy being part of this community.  If at any time you need assistance
-do not hesitate to ask for help:
-
-http://exercism.io/languages/kotlin/help
-
-Cheers!
diff --git a/kotlin/hello-world/README.md b/kotlin/hello-world/README.md
index 9f4e110..dfcd0fb 100644
--- a/kotlin/hello-world/README.md
+++ b/kotlin/hello-world/README.md
@@ -1,48 +1,30 @@
 # Hello World
 
-Write a function that greets the user by name, or by saying "Hello, World!" if no name is given.
+The classical introductory exercise. Just say "Hello, World!".
 
-["Hello, World!"](http://en.wikipedia.org/wiki/%22Hello,_world!%22_program) is the traditional first program for beginning programming in a new language.
+["Hello, World!"](http://en.wikipedia.org/wiki/%22Hello,_world!%22_program) is
+the traditional first program for beginning programming in a new language
+or environment.
 
-**Note:** You can skip this exercise by running:
+The objectives are simple:
 
-    exercism skip $LANGUAGE hello-world
+- Write a function that returns the string "Hello, World!".
+- Run the test suite and make sure that it succeeds.
+- Submit your solution and check it at the website.
 
-## Specification
+If everything goes well, you will be ready to fetch your first real exercise.
 
-Write a `Hello World!` function that can greet someone given their name.
-The function should return the appropriate greeting.
+Since this is your first Kotlin exercise, we've included a detailed TUTORIAL.md
+file that guides you through your solution. Check it out for tips and
+assistance!
 
-For an input of "Alice", the response should be "Hello, Alice!".
 
-If a name is not given, the response should be "Hello, World!"
 
-## Test-Driven Development
-
-As programmers mature, they eventually want to test their code.
-
-Here at Exercism we simulate [Test-Driven Development](http://en.wikipedia.org/wiki/Test-driven_development) (TDD), where you write your tests before writing any functionality. The simulation comes in the form of a pre-written test suite, which will signal that you have solved the problem.
-
-It will also provide you with a safety net to explore other solutions without breaking the functionality.
-
-### A typical TDD workflow on Exercism:
-
-1. Run the test file and pick one test that's failing.
-2. Write some code to fix the test you picked.
-3. Re-run the tests to confirm the test is now passing.
-4. Repeat from step 1.
-5. Submit your solution (`exercism submit /path/to/file`)
-
-## Instructions
-
-Submissions are encouraged to be general, within reason. Having said that, it's also important not to over-engineer a solution.
-
-It's important to remember that the goal is to make code as expressive and readable as we can. However, solutions to the hello-world exercise will not be reviewed by a person, but by rikki- the robot, who will offer an encouraging word.
+
 
 ## Source
 
 This is an exercise to introduce users to using Exercism [http://en.wikipedia.org/wiki/%22Hello,_world!%22_program](http://en.wikipedia.org/wiki/%22Hello,_world!%22_program)
 
-## Submitting Incomplete Problems
+## Submitting Incomplete Solutions
 It's possible to submit an incomplete solution so you can see how others have completed the exercise.
-
diff --git a/kotlin/hello-world/TUTORIAL.md b/kotlin/hello-world/TUTORIAL.md
index c3ea818..432cf79 100644
--- a/kotlin/hello-world/TUTORIAL.md
+++ b/kotlin/hello-world/TUTORIAL.md
@@ -1,22 +1,15 @@
 NOTE: You can also view the HTML version of this file here:
 https://github.com/exercism/kotlin/blob/master/exercises/hello-world/TUTORIAL.md
 
+* [Introduction](#introduction)
+* [Exercise Structure](#exercise-structure)
 * [Solving "Hello, World!"](#solving-hello-world)
- * [Reading Gradle output](#reading-gradle-output)
- * [Fixing the first failing test](#fixing-the-first-failing-test)
- * [Enabling and fixing the second test](#enabling-and-fixing-the-second-test)
- * [Enabling and fixing the third test](#enabling-and-fixing-the-third-test)
- * [Enabling the last test](#enabling-the-last-test)
- * [Refactoring](#refactoring)
 * [Submitting your first iteration](#submitting-your-first-iteration)
 * [Next Steps](#next-steps)
- * [Review (and comment on) others' submissions to this exercise](#review-and-comment-on-others-submissions-to-this-exercise)
- * [Extend an exercise](#extend-an-exercise)
- * [Contribute to Exercism](#contribute-to-exercism)
 
 ----
 
-# Solving "Hello, World!"
+# Introduction
 
 Welcome to the first exercise on the Kotlin track!
 
@@ -26,7 +19,7 @@ Each exercise comes with a set of tests.  The first pass through the
 exercise is about getting all of the tests to pass, one at a time.
 
 If you have not installed the Java Development Kit and Gradle, you must do
-so now.  For help with this, see: http://exercism.io/languages/kotlin/installing
+so now.  For help with this, see: http://exercism.io/languages/kotlin/installation
 
 ----
 
@@ -35,7 +28,22 @@ left off.  If you haven't reviewed those instructions, do so now.
 
 The following instructions work equally well on Windows, Mac OS X and Linux.
 
-## Reading Gradle output
+# Exercise Structure
+
+When you fetch a new Kotlin exercise, you will receive:
+
+* __one or more test files__ (always). These live in the `src/test/kotlin`
+directory and define a set of tests that our solution must satisfy before we
+can safely declare that it is working.
+* __one or more starter files__ (initially). If provided, these live in the
+`src/main/kotlin` directory and define shells of the classes you will need
+in order to solve the current problem.
+
+
+
+# Solving "Hello World!"
+
+## Step 1: Run the tests against the starter solution
 
 Use Gradle to run the tests:
 
@@ -84,19 +92,14 @@ running the task you asked it to: executing the tests against the solution.
 ```
 :test
 
-HelloWorldTest > helloSampleName SKIPPED
 
-HelloWorldTest > helloBlankName SKIPPED
-
-HelloWorldTest > helloNoName FAILED
+HelloWorldTest > helloWorldTest FAILED
     org.junit.ComparisonFailure: expected:<[Hello, World!]> but was:<[]>
         at org.junit.Assert.assertEquals(Assert.java:115)
         at org.junit.Assert.assertEquals(Assert.java:144)
         at HelloWorldTest.helloNoName(HelloWorldTest.kt:10)
 
-HelloWorldTest > helloAnotherSampleName SKIPPED
-
-4 tests completed, 1 failed, 3 skipped
+1 test completed, 1 failed
 :test FAILED
 
 FAILURE: Build failed with an exception.
@@ -113,19 +116,19 @@ BUILD FAILED
 Total time: 7.473 secs
 ```
 
-Seeing the word "fail" NINE TIMES might give you the impression you've done
+Seeing the word "fail" might give you the impression you've done
 something horribly wrong!  You haven't.  It's a whole lot of noise over
 a single test not passing.
 
 Let's focus in on the important bits:
 
 ```
-HelloWorldTest > helloNoName FAILED
+HelloWorldTest > helloWorldTest FAILED
     org.junit.ComparisonFailure: expected:<[Hello, World!]> but was:<[]>
 ```
 
 ...is read: "Within the test class named `HelloWorldTest`, the test method
-`helloNoName` did not pass because the solution did not satisfy an
+`helloWorldTest` did not pass because the solution did not satisfy an
 assertion.  Apparently, we expected to see the string 'Hello, World!' but
 a blank string was returned instead.
 
@@ -133,7 +136,7 @@ The last line of the stack trace tells us exactly where this unsatisfied
 assertion lives:
 
 ```
-        at HelloWorldTest.helloNoName(HelloWorldTest.kt:10)
+        at HelloWorldTest.helloWorldTest(HelloWorldTest.kt:10)
 ```
 
 Looks like the scene of the crime is on line 10 in the test file.
@@ -145,25 +148,22 @@ Knowing these two facts,
 
 we can turn this failure into success.
 
-
-
-## Fixing the first failing test
+## Step 2: Fix the Test!
 
 In your favorite text editor, open `src/test/kotlin/HelloWorldTest.kt`
 and go to line 10.
 
 ```kotlin
-assertEquals("Hello, World!", hello(""))
+assertEquals("Hello, World!", hello())
 ```
 
-The test is expecting that `hello()`, when given an empty string (`""`),
-returns "Hello, World!".  Instead, `hello()` is returning `""`.
+The test is expecting that `hello()`, returns "Hello, World!".  Instead, `hello()` is returning `""`.
 Let's fix that.
 
 Open `src/main/kotlin/HelloWorld.kt`.
 
 ```kotlin
-fun hello(name: String = ""): String {
+fun hello(): String {
    return ""
 }
 ```
@@ -171,7 +171,7 @@ fun hello(name: String = ""): String {
 Let's change that to return the expected string:
 
 ```kotlin
-fun hello(name: String = ""): String {
+fun hello(): String {
    return "Hello, World!"
 }
 ```
@@ -181,7 +181,6 @@ Save the file and run the tests again:
 ```
 $ gradle test
 :compileKotlin
-w: /Users/jtigger/exercism/exercises/kotlin/hello-world/src/main/kotlin/HelloWorld.kt: (1, 11): Parameter 'name' is never used
 :compileJava UP-TO-DATE
 :copyMainKotlinClasses
 :processResources UP-TO-DATE
@@ -193,419 +192,18 @@ w: /Users/jtigger/exercism/exercises/kotlin/hello-world/src/main/kotlin/HelloWor
 :testClasses UP-TO-DATE
 :test
 
-HelloWorldTest > helloSampleName SKIPPED
-
-HelloWorldTest > helloBlankName SKIPPED
-
-HelloWorldTest > helloNoName PASSED
-
-HelloWorldTest > helloAnotherSampleName SKIPPED
+HelloWorldTest > helloWorldTest PASSED
 
 BUILD SUCCESSFUL
 
 Total time: 7.318 secs
 ```
 
-"BUILD SUCCESSFUL"!  Woohoo! :)  You can see that `helloNoName()` test is
+"BUILD SUCCESSFUL"!  Woohoo! :)  You can see that `helloWorldTest()` test is
 now passing.
 
-We still see the warning about `name` not being used; we'll get to that
-next.
-
-With one win under our belt, we can turn our focus to some other messages
-that we've been ignoring: the lines ending in "`SKIPPED`".
-
-Each test suite contains a series of tests, all of which have been marked
-to be skipped/ignored except the first one.  We did this to help you focus
-on getting one test running at a time.
-
-Let's tackle the next test...
-
-
-
-## Enabling and fixing the second test
-
-Right now, that second test is being skipped/ignored.  Let's enable it.
-
-(Re)open `src/test/kotlin/HelloWorldTest.kt` and find the second test:
-
-```kotlin
-@Test
-@Ignore
-fun helloSampleName() {
-    assertEquals("Hello, Alice!", hello("Alice"))
-}
-```
-
-When the JUnit test runner sees that `@Ignore` annotation on the test
-method, it knows to skip over that test.  Remove that line:
-
-```kotlin
-@Test
-fun helloSampleName() {
-    assertEquals("Hello, Alice!", hello("Alice"))
-}
-```
-
-Now, when you run the tests, both tests run:
-
-```
-$ gradle test
-:test
-
-HelloWorldTest > helloSampleName FAILED
-    org.junit.ComparisonFailure: expected:<Hello, [Alice]!> but was:<Hello, [World]!>
-        at org.junit.Assert.assertEquals(Assert.java:115)
-        at org.junit.Assert.assertEquals(Assert.java:144)
-        at HelloWorldTest.helloSampleName(HelloWorldTest.kt:15)
-
-HelloWorldTest > helloBlankName SKIPPED
-
-HelloWorldTest > helloNoName PASSED
-
-HelloWorldTest > helloAnotherSampleName SKIPPED
-
-4 tests completed, 1 failed, 2 skipped
-```
-
-The first test, `helloNoName()` continues to pass.  We see that
-`helloSampleName` -- the test we just un-`@Ignore`'d -- is now running and
-failing.  Yay, failing test!  In fact, the "failure" message is just
-describing the difference between what the program does now and what it
-should do for us to call it "done."
-
-Right now, we've hardcoded the greeting.  Enabling this second test has
-unleashed a new expectation: that our program incorporate a name given
-into that greeting.  When given the name "`Alice`", that's who should be
-greeted instead of "`World`".
-
-(Re)open `src/main/kotlin/HelloWorld.kt`.
-
-```kotlin
-fun hello(name: String = ""): String {
-   return "Hello, World!"
-}
-```
-
-While `hello()` does accept a reference to a string named `name`, it is not
-using it in the output.  Let's change that:
-
-
-```kotlin
-fun hello(name: String = ""): String {
-   return "Hello, $name!"
-}
-```
-
-_(Kotlin allows you to embed expressions within strings, a feature known as
-string interpolation.  For more about this feature, see
-https://kotlinlang.org/docs/reference/basic-types.html#string-templates )_
-
-... and rerun the tests ...
-
-```
-$ gradle test
-:test
-
-HelloWorldTest > helloSampleName PASSED
-
-HelloWorldTest > helloBlankName SKIPPED
-
-HelloWorldTest > helloNoName FAILED
-    org.junit.ComparisonFailure: expected:<Hello, [World]!> but was:<Hello, []!>
-        at org.junit.Assert.assertEquals(Assert.java:115)
-        at org.junit.Assert.assertEquals(Assert.java:144)
-        at HelloWorldTest.helloNoName(HelloWorldTest.kt:10)
-
-HelloWorldTest > helloAnotherSampleName SKIPPED
-
-4 tests completed, 1 failed, 2 skipped
-```
-
-Wait... didn't we just fix the test?  Why is it failing?  Take a closer look...
-
-In fact, `helloSampleName()` *is* passing.  It's just that at the same time,
-we just inadvertently broke that first test: `helloNoName()`.
-
-This is one tiny example of the benefit of maintaining a test suite: if we
-use them to drive out our code, the second we break the program the tests
-say so.  Since we saw them passing just *before* our latest change,
-whatever we *just* did most likely cause that regression.
-
-Our latest change was making the greeting dependent on the name given.  If
-no name is given, our function defaults to an empty string.  The intent is
-that when `hello()` is called on no one in particular, our function greets
-the whole world.  Sound like a job for a default value!
-
-`src/main/kotlin/HelloWorld.kt`:
-```kotlin
-fun hello(name: String = "World"): String {
-   return "Hello, $name!"
-}
-```
-
-... and re-run the tests ...
-
-```
-$ gradle test
-:compileKotlin
-:compileJava UP-TO-DATE
-:copyMainKotlinClasses
-:processResources UP-TO-DATE
-:classes UP-TO-DATE
-:compileTestKotlin
-:compileTestJava UP-TO-DATE
-:copyTestKotlinClasses
-:processTestResources UP-TO-DATE
-:testClasses UP-TO-DATE
-:test
-
-HelloWorldTest > helloSampleName PASSED
-
-HelloWorldTest > helloBlankName SKIPPED
-
-HelloWorldTest > helloNoName PASSED
-
-HelloWorldTest > helloAnotherSampleName SKIPPED
-
-BUILD SUCCESSFUL
-```
-
-Excellent!  Not only are both our tests passing, but that pesky warning
-about not using `name` has faded into the distant past.  We're now
-(at least) three-fourth the way done.  Just two more tests to go...
-
-
-
-## Enabling and fixing the third test
-
-(Re)open `src/test/kotlin/HelloWorldTest.kt` and find the penultimate test:
-
-```kotlin
-@Test
-@Ignore
-fun helloBlankName() {
-    assertEquals("Hello, World!", hello("    "))
-}
-```
-
-In this test, we're trying to be tricky.  It's one thing to omit a
-parameter completely; it's a whole other situation when we provide a blank
-string for a name.  This test is telling us that we'd like to treat these
-cases the same way.
-
-... and remove it's `@Ignore` to enable it ...
-
-```kotlin
-@Test
-fun helloBlankName() {
-    assertEquals("Hello, World!", hello("    "))
-}
-```
-
-... and re-run the tests ...
-
-```
-$ gradle test
-:test
-
-HelloWorldTest > helloSampleName PASSED
-
-HelloWorldTest > helloBlankName FAILED
-    org.junit.ComparisonFailure: expected:<Hello, [World]!> but was:<Hello, [    ]!>
-        at org.junit.Assert.assertEquals(Assert.java:115)
-        at org.junit.Assert.assertEquals(Assert.java:144)
-        at HelloWorldTest.helloBlankName(HelloWorldTest.kt:20)
-
-HelloWorldTest > helloNoName PASSED
-
-HelloWorldTest > helloAnotherSampleName SKIPPED
-
-4 tests completed, 1 failed, 1 skipped
-```
-
-Since `"    "` is an actual value, Kotlin does _not_ substitute in the
-default value.
-
-(Re)open `src/main/kotlin/HelloWorld.kt`.
-
-```kotlin
-fun hello(name: String = "World"): String {
-   return "Hello, $name!"
-}
-```
-
-One way to handle this case is to check to see if `name` is blank.  Let's
-do that:
-
-
-```kotlin
-fun hello(name: String = "World"): String {
-   return "Hello, ${if (name.isBlank()) "World" else name}!"
-}
-```
-
-As you can see, string templates can contain not just references to
-variables, but entire expressions!  This is appropriate in a case like this
-where we want to apply a simple condition to a value.
-
-... and rerun the tests ...
-
-```
-$ gradle test
-:test
-
-HelloWorldTest > helloSampleName PASSED
-
-HelloWorldTest > helloBlankName PASSED
-
-HelloWorldTest > helloNoName PASSED
-
-HelloWorldTest > helloAnotherSampleName SKIPPED
-
-BUILD SUCCESSFUL
-```
-
-We're almost there (perhaps closer than you think)!  Just _one_ more test
-to pass before we have a solution we can have real confidence in.
-
-
-
-## Enabling the last test
-
-(Re)open `src/test/kotlin/HelloWorldTest.kt` and find the last test:
-
-```kotlin
-@Test
-@Ignore
-fun helloAnotherSampleName() {
-    assertEquals("Hello, Bob!", hello("Bob"))
-}
-```
-
-... and pop-off that `@Ignore` ...
-
-```kotlin
-@Test
-fun helloAnotherSampleName() {
-    assertEquals("Hello, Bob!", hello("Bob"))
-}
-```
-
-... then rerun the tests ...
-
-```
-:test
-
-HelloWorldTest > helloSampleName PASSED
-
-HelloWorldTest > helloBlankName PASSED
-
-HelloWorldTest > helloNoName PASSED
-
-HelloWorldTest > helloAnotherSampleName PASSED
-
-BUILD SUCCESSFUL
-```
-
-Oh, hello!  Turns out, the solution we put into place didn't just apply for
-"`Alice`" but for "`Bob`" equally well.  In this case, the test succeeded
-with no additional code on our part.
-
 Congratulations!
 
-
-
-## Refactoring
-
-Now that you've got all the tests passing, you might consider whether
-the code is in the most readable/maintainable/efficient shape.  What makes
-for "good" design of software is a big topic.  The pursuit of it underlies
-much of what makes up the more valuable conversations on Exercism.
-
-Kotlin is such a concise language and this exercise is so small, there is
-not much room for us to make adjustments.  Most would leave this code, as
-is.
-
-That said, we've taken such pains to illustrate two core parts of the
-Test-Driven Development approach (i.e. "red", "green"), we'd be remiss if
-we skipped the all important final part: "refactor".
-
-More on TDD at http://www.jamesshore.com/Blog/Red-Green-Refactor.html.
-
-The core responsibility of `hello()` is to produce a personalized greeting.
-_How_ we determine whether or not a name is given (i.e. `name` is
-effectively an empty string) is a lower-level detail.
-
-```kotlin
-fun hello(name: String = "World"): String {
-   return "Hello, ${if (name.isBlank()) "World" else name}!"
-}
-```
-
-How would things read if we extracted that detail into a separate method?
-
-```kotlin
-fun hello(name: String = ""): String {
-   return "Hello, ${whom(name)}!"
-}
-
-private fun whom(name: String):String {
-   return if(name.isBlank()) "World" else name
-}
-```
-
-By extracting that logic into the `whom()` method, we've added a little
-abstraction to our program — it's not as literal as it was before.  Yet,
-it allows us to defer _needing_ to understand _how_ the recipient of the
-greeting is determined.
-
-If we can assume that `whom()` just works, we don't have to
-downshift in our head to those details.  Instead, we can remain at the same
-level of thinking: what's the greeting?
-
-_(Yes, this is considerable more lines of code; again, not a move we'd likely
-make typically.  The takeaway is this: when you are "done" with an exercise
-ask yourself, "can I adjust the shape of this code to better tell the
-story of what's going on through its shape?")_
-
-We made a bunch of changes, let's make sure we didn't break the program!
-
-```
-$ gradle test
-:compileKotlin
-:compileJava UP-TO-DATE
-:copyMainKotlinClasses
-:processResources UP-TO-DATE
-:classes UP-TO-DATE
-:compileTestKotlin
-:compileTestJava UP-TO-DATE
-:copyTestKotlinClasses UP-TO-DATE
-:processTestResources UP-TO-DATE
-:testClasses UP-TO-DATE
-:test
-
-HelloWorldTest > helloSampleName PASSED
-
-HelloWorldTest > helloBlankName PASSED
-
-HelloWorldTest > helloNoName PASSED
-
-HelloWorldTest > helloAnotherSampleName PASSED
-
-BUILD SUCCESSFUL
-```
-
-This illustrates another benefit of writing tests: you can make significant
-changes to the structure of the program and very quickly restore your
-confidence that the program still works.  These tests are a far cry from a
-"proof" of correctness, but well-written tests do a much better job of
-(very quickly) giving us evidence that it is.  Without them, we manually
-run the program with different inputs and/or inspecting the code
-line-by-line — time-consuming and error prone.
-
-
-
 # Submitting your first iteration
 
 With a working solution that we've reviewed, we're ready to submit it to
@@ -662,7 +260,7 @@ use the capitalized form on the person's name, regardless of the case they
 used.
 
 In that situation, you'd:
- 
+
 1. add a new test setting up that new expectation,
 2. implement that in the code (the same process we just went through
    together, above).
diff --git a/kotlin/hello-world/build.gradle b/kotlin/hello-world/build.gradle
index 3ed2722..e528a7b 100644
--- a/kotlin/hello-world/build.gradle
+++ b/kotlin/hello-world/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-  ext.kotlin_version = '1.0.2'
+  ext.kotlin_version = '1.2.40'
   repositories {
     mavenCentral()
   }
@@ -20,3 +20,9 @@ dependencies {
   testCompile 'junit:junit:4.12'
   testCompile "org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version"
 }
+test {
+  testLogging {
+    exceptionFormat = 'full'
+    events = ["passed", "failed", "skipped"]
+  }
+}
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diff --git a/kotlin/hello-world/build/kotlin-build/version.txt b/kotlin/hello-world/build/kotlin-build/version.txt
new file mode 100644
index 0000000..01aabac
--- /dev/null
+++ b/kotlin/hello-world/build/kotlin-build/version.txt
@@ -0,0 +1 @@
+11001
\ No newline at end of file
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+<!DOCTYPE html>
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<meta http-equiv="x-ua-compatible" content="IE=edge"/>
+<title>Test results - Class HelloWorldTest</title>
+<link href="../css/base-style.css" rel="stylesheet" type="text/css"/>
+<link href="../css/style.css" rel="stylesheet" type="text/css"/>
+<script src="../js/report.js" type="text/javascript"></script>
+</head>
+<body>
+<div id="content">
+<h1>Class HelloWorldTest</h1>
+<div class="breadcrumbs">
+<a href="../index.html">all</a> &gt; 
+<a href="../packages/default-package.html">default-package</a> &gt; HelloWorldTest</div>
+<div id="summary">
+<table>
+<tr>
+<td>
+<div class="summaryGroup">
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+<p>tests</p>
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+<p>ignored</p>
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+<div class="infoBox" id="duration">
+<div class="counter">0.015s</div>
+<p>duration</p>
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+</td>
+</tr>
+</table>
+</div>
+</td>
+<td>
+<div class="infoBox success" id="successRate">
+<div class="percent">100%</div>
+<p>successful</p>
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+</td>
+</tr>
+</table>
+</div>
+<div id="tabs">
+<ul class="tabLinks">
+<li>
+<a href="#tab0">Tests</a>
+</li>
+</ul>
+<div id="tab0" class="tab">
+<h2>Tests</h2>
+<table>
+<thead>
+<tr>
+<th>Test</th>
+<th>Duration</th>
+<th>Result</th>
+</tr>
+</thead>
+<tr>
+<td class="success">helloWorldTest</td>
+<td class="success">0.015s</td>
+<td class="success">passed</td>
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+</table>
+</div>
+</div>
+<div id="footer">
+<p>
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+</label>
+</div>Generated by 
+<a href="http://www.gradle.org">Gradle 4.8</a> at Jun 21, 2018, 8:11:56 AM</p>
+</div>
+</div>
+</body>
+</html>
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+#label-for-line-wrapping-toggle {
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+ul {
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+h1, h2, h3 {
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+h2 {
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+}
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+}
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+}
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+    display: block;
+    outline: none;
+    text-decoration: none;
+    margin: 0;
+    padding: 0;
+}
+
+ul.tabLinks li h2 {
+    margin: 0;
+    padding: 0;
+}
+
+div.tab {
+}
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+div.selected {
+    display: block;
+}
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+    display: none;
+}
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+div.tab table {
+    min-width: 350px;
+    width: auto !important;
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+    border-collapse: collapse;
+}
+
+div.tab th, div.tab table {
+    border-bottom: solid #d0d0d0 1px;
+}
+
+div.tab th {
+    text-align: left;
+    white-space: nowrap;
+    padding-left: 6em;
+}
+
+div.tab th:first-child {
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+}
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+    white-space: nowrap;
+    padding-left: 6em;
+    padding-top: 5px;
+    padding-bottom: 5px;
+}
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+}
+
+div.tab td.numeric, div.tab th.numeric {
+    text-align: right;
+}
+
+span.code {
+    display: inline-block;
+    margin-top: 0em;
+    margin-bottom: 1em;
+}
+
+span.code pre {
+    font-size: 11pt;
+    padding-top: 10px;
+    padding-bottom: 10px;
+    padding-left: 10px;
+    padding-right: 10px;
+    margin: 0;
+    background-color: #f7f7f7;
+    border: solid 1px #d0d0d0;
+    min-width: 700px;
+    width: auto !important;
+    width: 700px;
+}
+
+span.wrapped pre {
+    word-wrap: break-word;
+    white-space: pre-wrap;
+    word-break: break-all;
+}
+
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+    display: none;
+}
\ No newline at end of file
diff --git a/kotlin/hello-world/build/reports/tests/test/css/style.css b/kotlin/hello-world/build/reports/tests/test/css/style.css
new file mode 100644
index 0000000..3dc4913
--- /dev/null
+++ b/kotlin/hello-world/build/reports/tests/test/css/style.css
@@ -0,0 +1,84 @@
+
+#summary {
+    margin-top: 30px;
+    margin-bottom: 40px;
+}
+
+#summary table {
+    border-collapse: collapse;
+}
+
+#summary td {
+    vertical-align: top;
+}
+
+.breadcrumbs, .breadcrumbs a {
+    color: #606060;
+}
+
+.infoBox {
+    width: 110px;
+    padding-top: 15px;
+    padding-bottom: 15px;
+    text-align: center;
+}
+
+.infoBox p {
+    margin: 0;
+}
+
+.counter, .percent {
+    font-size: 120%;
+    font-weight: bold;
+    margin-bottom: 8px;
+}
+
+#duration {
+    width: 125px;
+}
+
+#successRate, .summaryGroup {
+    border: solid 2px #d0d0d0;
+    -moz-border-radius: 10px;
+    border-radius: 10px;
+}
+
+#successRate {
+    width: 140px;
+    margin-left: 35px;
+}
+
+#successRate .percent {
+    font-size: 180%;
+}
+
+.success, .success a {
+    color: #008000;
+}
+
+div.success, #successRate.success {
+    background-color: #bbd9bb;
+    border-color: #008000;
+}
+
+.failures, .failures a {
+    color: #b60808;
+}
+
+.skipped, .skipped a {
+    color: #c09853;
+}
+
+div.failures, #successRate.failures {
+    background-color: #ecdada;
+    border-color: #b60808;
+}
+
+ul.linkList {
+    padding-left: 0;
+}
+
+ul.linkList li {
+    list-style: none;
+    margin-bottom: 5px;
+}
diff --git a/kotlin/hello-world/build/reports/tests/test/index.html b/kotlin/hello-world/build/reports/tests/test/index.html
new file mode 100644
index 0000000..9f919ed
--- /dev/null
+++ b/kotlin/hello-world/build/reports/tests/test/index.html
@@ -0,0 +1,132 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<meta http-equiv="x-ua-compatible" content="IE=edge"/>
+<title>Test results - Test Summary</title>
+<link href="css/base-style.css" rel="stylesheet" type="text/css"/>
+<link href="css/style.css" rel="stylesheet" type="text/css"/>
+<script src="js/report.js" type="text/javascript"></script>
+</head>
+<body>
+<div id="content">
+<h1>Test Summary</h1>
+<div id="summary">
+<table>
+<tr>
+<td>
+<div class="summaryGroup">
+<table>
+<tr>
+<td>
+<div class="infoBox" id="tests">
+<div class="counter">1</div>
+<p>tests</p>
+</div>
+</td>
+<td>
+<div class="infoBox" id="failures">
+<div class="counter">0</div>
+<p>failures</p>
+</div>
+</td>
+<td>
+<div class="infoBox" id="ignored">
+<div class="counter">0</div>
+<p>ignored</p>
+</div>
+</td>
+<td>
+<div class="infoBox" id="duration">
+<div class="counter">0.015s</div>
+<p>duration</p>
+</div>
+</td>
+</tr>
+</table>
+</div>
+</td>
+<td>
+<div class="infoBox success" id="successRate">
+<div class="percent">100%</div>
+<p>successful</p>
+</div>
+</td>
+</tr>
+</table>
+</div>
+<div id="tabs">
+<ul class="tabLinks">
+<li>
+<a href="#tab0">Packages</a>
+</li>
+<li>
+<a href="#tab1">Classes</a>
+</li>
+</ul>
+<div id="tab0" class="tab">
+<h2>Packages</h2>
+<table>
+<thead>
+<tr>
+<th>Package</th>
+<th>Tests</th>
+<th>Failures</th>
+<th>Ignored</th>
+<th>Duration</th>
+<th>Success rate</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td class="success">
+<a href="packages/default-package.html">default-package</a>
+</td>
+<td>1</td>
+<td>0</td>
+<td>0</td>
+<td>0.015s</td>
+<td class="success">100%</td>
+</tr>
+</tbody>
+</table>
+</div>
+<div id="tab1" class="tab">
+<h2>Classes</h2>
+<table>
+<thead>
+<tr>
+<th>Class</th>
+<th>Tests</th>
+<th>Failures</th>
+<th>Ignored</th>
+<th>Duration</th>
+<th>Success rate</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td class="success"/>
+<a href="classes/HelloWorldTest.html">HelloWorldTest</a>
+<td>1</td>
+<td>0</td>
+<td>0</td>
+<td>0.015s</td>
+<td class="success">100%</td>
+</tr>
+</tbody>
+</table>
+</div>
+</div>
+<div id="footer">
+<p>
+<div>
+<label class="hidden" id="label-for-line-wrapping-toggle" for="line-wrapping-toggle">Wrap lines
+<input id="line-wrapping-toggle" type="checkbox" autocomplete="off"/>
+</label>
+</div>Generated by 
+<a href="http://www.gradle.org">Gradle 4.8</a> at Jun 21, 2018, 8:11:56 AM</p>
+</div>
+</div>
+</body>
+</html>
diff --git a/kotlin/hello-world/build/reports/tests/test/js/report.js b/kotlin/hello-world/build/reports/tests/test/js/report.js
new file mode 100644
index 0000000..83bab4a
--- /dev/null
+++ b/kotlin/hello-world/build/reports/tests/test/js/report.js
@@ -0,0 +1,194 @@
+(function (window, document) {
+    "use strict";
+
+    var tabs = {};
+
+    function changeElementClass(element, classValue) {
+        if (element.getAttribute("className")) {
+            element.setAttribute("className", classValue);
+        } else {
+            element.setAttribute("class", classValue);
+        }
+    }
+
+    function getClassAttribute(element) {
+        if (element.getAttribute("className")) {
+            return element.getAttribute("className");
+        } else {
+            return element.getAttribute("class");
+        }
+    }
+
+    function addClass(element, classValue) {
+        changeElementClass(element, getClassAttribute(element) + " " + classValue);
+    }
+
+    function removeClass(element, classValue) {
+        changeElementClass(element, getClassAttribute(element).replace(classValue, ""));
+    }
+
+    function initTabs() {
+        var container = document.getElementById("tabs");
+
+        tabs.tabs = findTabs(container);
+        tabs.titles = findTitles(tabs.tabs);
+        tabs.headers = findHeaders(container);
+        tabs.select = select;
+        tabs.deselectAll = deselectAll;
+        tabs.select(0);
+
+        return true;
+    }
+
+    function getCheckBox() {
+        return document.getElementById("line-wrapping-toggle");
+    }
+
+    function getLabelForCheckBox() {
+        return document.getElementById("label-for-line-wrapping-toggle");
+    }
+
+    function findCodeBlocks() {
+        var spans = document.getElementById("tabs").getElementsByTagName("span");
+        var codeBlocks = [];
+        for (var i = 0; i < spans.length; ++i) {
+            if (spans[i].className.indexOf("code") >= 0) {
+                codeBlocks.push(spans[i]);
+            }
+        }
+        return codeBlocks;
+    }
+
+    function forAllCodeBlocks(operation) {
+        var codeBlocks = findCodeBlocks();
+
+        for (var i = 0; i < codeBlocks.length; ++i) {
+            operation(codeBlocks[i], "wrapped");
+        }
+    }
+
+    function toggleLineWrapping() {
+        var checkBox = getCheckBox();
+
+        if (checkBox.checked) {
+            forAllCodeBlocks(addClass);
+        } else {
+            forAllCodeBlocks(removeClass);
+        }
+    }
+
+    function initControls() {
+        if (findCodeBlocks().length > 0) {
+            var checkBox = getCheckBox();
+            var label = getLabelForCheckBox();
+
+            checkBox.onclick = toggleLineWrapping;
+            checkBox.checked = false;
+
+            removeClass(label, "hidden");
+         }
+    }
+
+    function switchTab() {
+        var id = this.id.substr(1);
+
+        for (var i = 0; i < tabs.tabs.length; i++) {
+            if (tabs.tabs[i].id === id) {
+                tabs.select(i);
+                break;
+            }
+        }
+
+        return false;
+    }
+
+    function select(i) {
+        this.deselectAll();
+
+        changeElementClass(this.tabs[i], "tab selected");
+        changeElementClass(this.headers[i], "selected");
+
+        while (this.headers[i].firstChild) {
+            this.headers[i].removeChild(this.headers[i].firstChild);
+        }
+
+        var h2 = document.createElement("H2");
+
+        h2.appendChild(document.createTextNode(this.titles[i]));
+        this.headers[i].appendChild(h2);
+    }
+
+    function deselectAll() {
+        for (var i = 0; i < this.tabs.length; i++) {
+            changeElementClass(this.tabs[i], "tab deselected");
+            changeElementClass(this.headers[i], "deselected");
+
+            while (this.headers[i].firstChild) {
+                this.headers[i].removeChild(this.headers[i].firstChild);
+            }
+
+            var a = document.createElement("A");
+
+            a.setAttribute("id", "ltab" + i);
+            a.setAttribute("href", "#tab" + i);
+            a.onclick = switchTab;
+            a.appendChild(document.createTextNode(this.titles[i]));
+
+            this.headers[i].appendChild(a);
+        }
+    }
+
+    function findTabs(container) {
+        return findChildElements(container, "DIV", "tab");
+    }
+
+    function findHeaders(container) {
+        var owner = findChildElements(container, "UL", "tabLinks");
+        return findChildElements(owner[0], "LI", null);
+    }
+
+    function findTitles(tabs) {
+        var titles = [];
+
+        for (var i = 0; i < tabs.length; i++) {
+            var tab = tabs[i];
+            var header = findChildElements(tab, "H2", null)[0];
+
+            header.parentNode.removeChild(header);
+
+            if (header.innerText) {
+                titles.push(header.innerText);
+            } else {
+                titles.push(header.textContent);
+            }
+        }
+
+        return titles;
+    }
+
+    function findChildElements(container, name, targetClass) {
+        var elements = [];
+        var children = container.childNodes;
+
+        for (var i = 0; i < children.length; i++) {
+            var child = children.item(i);
+
+            if (child.nodeType === 1 && child.nodeName === name) {
+                if (targetClass && child.className.indexOf(targetClass) < 0) {
+                    continue;
+                }
+
+                elements.push(child);
+            }
+        }
+
+        return elements;
+    }
+
+    // Entry point.
+
+    window.onload = function() {
+        initTabs();
+        initControls();
+    };
+} (window, window.document));
\ No newline at end of file
diff --git a/kotlin/hello-world/build/reports/tests/test/packages/default-package.html b/kotlin/hello-world/build/reports/tests/test/packages/default-package.html
new file mode 100644
index 0000000..bae6253
--- /dev/null
+++ b/kotlin/hello-world/build/reports/tests/test/packages/default-package.html
@@ -0,0 +1,103 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<meta http-equiv="x-ua-compatible" content="IE=edge"/>
+<title>Test results - Default package</title>
+<link href="../css/base-style.css" rel="stylesheet" type="text/css"/>
+<link href="../css/style.css" rel="stylesheet" type="text/css"/>
+<script src="../js/report.js" type="text/javascript"></script>
+</head>
+<body>
+<div id="content">
+<h1>Default package</h1>
+<div class="breadcrumbs">
+<a href="../index.html">all</a> &gt; default-package</div>
+<div id="summary">
+<table>
+<tr>
+<td>
+<div class="summaryGroup">
+<table>
+<tr>
+<td>
+<div class="infoBox" id="tests">
+<div class="counter">1</div>
+<p>tests</p>
+</div>
+</td>
+<td>
+<div class="infoBox" id="failures">
+<div class="counter">0</div>
+<p>failures</p>
+</div>
+</td>
+<td>
+<div class="infoBox" id="ignored">
+<div class="counter">0</div>
+<p>ignored</p>
+</div>
+</td>
+<td>
+<div class="infoBox" id="duration">
+<div class="counter">0.015s</div>
+<p>duration</p>
+</div>
+</td>
+</tr>
+</table>
+</div>
+</td>
+<td>
+<div class="infoBox success" id="successRate">
+<div class="percent">100%</div>
+<p>successful</p>
+</div>
+</td>
+</tr>
+</table>
+</div>
+<div id="tabs">
+<ul class="tabLinks">
+<li>
+<a href="#tab0">Classes</a>
+</li>
+</ul>
+<div id="tab0" class="tab">
+<h2>Classes</h2>
+<table>
+<thread>
+<tr>
+<th>Class</th>
+<th>Tests</th>
+<th>Failures</th>
+<th>Ignored</th>
+<th>Duration</th>
+<th>Success rate</th>
+</tr>
+</thread>
+<tr>
+<td class="success">
+<a href="../classes/HelloWorldTest.html">HelloWorldTest</a>
+</td>
+<td>1</td>
+<td>0</td>
+<td>0</td>
+<td>0.015s</td>
+<td class="success">100%</td>
+</tr>
+</table>
+</div>
+</div>
+<div id="footer">
+<p>
+<div>
+<label class="hidden" id="label-for-line-wrapping-toggle" for="line-wrapping-toggle">Wrap lines
+<input id="line-wrapping-toggle" type="checkbox" autocomplete="off"/>
+</label>
+</div>Generated by 
+<a href="http://www.gradle.org">Gradle 4.8</a> at Jun 21, 2018, 8:11:56 AM</p>
+</div>
+</div>
+</body>
+</html>
diff --git a/kotlin/hello-world/build/test-results/test/TEST-HelloWorldTest.xml b/kotlin/hello-world/build/test-results/test/TEST-HelloWorldTest.xml
new file mode 100644
index 0000000..13c47d6
--- /dev/null
+++ b/kotlin/hello-world/build/test-results/test/TEST-HelloWorldTest.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<testsuite name="HelloWorldTest" tests="1" skipped="0" failures="0" errors="0" timestamp="2018-06-21T13:11:56" hostname="kain" time="0.015">
+  <properties/>
+  <testcase name="helloWorldTest" classname="HelloWorldTest" time="0.015"/>
+  <system-out><![CDATA[]]></system-out>
+  <system-err><![CDATA[]]></system-err>
+</testsuite>
diff --git a/kotlin/hello-world/build/test-results/test/binary/output.bin b/kotlin/hello-world/build/test-results/test/binary/output.bin
new file mode 100644
index 0000000..e69de29
diff --git a/kotlin/hello-world/build/test-results/test/binary/output.bin.idx b/kotlin/hello-world/build/test-results/test/binary/output.bin.idx
new file mode 100644
index 0000000..f76dd23
Binary files /dev/null and b/kotlin/hello-world/build/test-results/test/binary/output.bin.idx differ
diff --git a/kotlin/hello-world/build/test-results/test/binary/results.bin b/kotlin/hello-world/build/test-results/test/binary/results.bin
new file mode 100644
index 0000000..d73368f
Binary files /dev/null and b/kotlin/hello-world/build/test-results/test/binary/results.bin differ
diff --git a/kotlin/hello-world/src/main/kotlin/HelloWorld.kt b/kotlin/hello-world/src/main/kotlin/HelloWorld.kt
index 9738a23..662ce3c 100644
--- a/kotlin/hello-world/src/main/kotlin/HelloWorld.kt
+++ b/kotlin/hello-world/src/main/kotlin/HelloWorld.kt
@@ -1,31 +1,3 @@
-/**
- * Simple HelloWorld singleton class as defined by the `Kotlin object keyword`.
- * See: https://kotlinlang.org/docs/reference/object-declarations.html#object-declarations
- *
- * As an alternative one could create a class such as:
- * ```
- * class HelloWorld(name: String? = "Default Value") {
- *     fun hello(): String {
- *
- *     }
- * }
- * ```
- * Resulting in a call such as: `HelloWorld("Bob").hello()`
- * See: https://kotlinlang.org/docs/reference/classes.html#constructors
- *
- * In Kotlin we make objects defined as nullable via the trailing `?`, if you try
- * to assign a null value to any value that isn't nullable a compilation error is thrown.
- * Kotlin makes sure you are accessing nullable values safely and provides null safe calls
- * and the use of the elvis operator. See: https://kotlinlang.org/docs/reference/null-safety.html
- *
- * You may provide default values on methods, so if an argument is omitted the default is used.
- * See: https://kotlinlang.org/docs/reference/functions.html#default-arguments
- *
- * Kotlin provides String interpolation to make String formatting simple.
- * See: https://kotlinlang.org/docs/reference/idioms.html#string-interpolation
- */
-object HelloWorld {
-    fun hello(name: String? = "Default Argument"): String {
-
-    }
+fun hello(): String {
+   return "Hello, World!"
 }
diff --git a/kotlin/hello-world/src/test/kotlin/HelloWorldTest.kt b/kotlin/hello-world/src/test/kotlin/HelloWorldTest.kt
index c1c41a2..2da58fd 100644
--- a/kotlin/hello-world/src/test/kotlin/HelloWorldTest.kt
+++ b/kotlin/hello-world/src/test/kotlin/HelloWorldTest.kt
@@ -1,32 +1,11 @@
-import kotlin.test.assertEquals
 import org.junit.Test
+import kotlin.test.assertEquals
 
 class HelloWorldTest {
 
     @Test
-    fun helloNoName() {
-        assertEquals("Hello, World!", HelloWorld.hello())
+    fun helloWorldTest() {
+        assertEquals("Hello, World!", hello())
     }
 
-    @Test
-    fun helloBlankName() {
-        assertEquals("Hello, World!", HelloWorld.hello(""))
-        assertEquals("Hello, World!", HelloWorld.hello("    "))
-    }
-
-    @Test
-    fun helloNullName() {
-        //This isn't advised in Kotlin but demonstrates the null safety in Kotlin
-        assertEquals("Hello, World!", HelloWorld.hello(null))
-    }
-
-    @Test
-    fun helloSampleName() {
-        assertEquals("Hello, Alice!", HelloWorld.hello("Alice"))
-    }
-
-    @Test
-    fun helloAnotherSampleName() {
-        assertEquals("Hello, Bob!", HelloWorld.hello("Bob"))
-    }
 }
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+++ b/kotlin/leap/.gradle/buildOutputCleanup/cache.properties
@@ -0,0 +1,2 @@
+#Thu Jun 21 08:46:17 CDT 2018
+gradle.version=4.8
diff --git a/kotlin/leap/.gradle/buildOutputCleanup/outputFiles.bin b/kotlin/leap/.gradle/buildOutputCleanup/outputFiles.bin
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diff --git a/kotlin/leap/README.md b/kotlin/leap/README.md
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--- /dev/null
+++ b/kotlin/leap/README.md
@@ -0,0 +1,36 @@
+# Leap
+
+Given a year, report if it is a leap year.
+
+The tricky thing here is that a leap year in the Gregorian calendar occurs:
+
+```text
+on every year that is evenly divisible by 4
+  except every year that is evenly divisible by 100
+    unless the year is also evenly divisible by 400
+```
+
+For example, 1997 is not a leap year, but 1996 is.  1900 is not a leap
+year, but 2000 is.
+
+If your language provides a method in the standard library that does
+this look-up, pretend it doesn't exist and implement it yourself.
+
+## Notes
+
+Though our exercise adopts some very simple rules, there is more to
+learn!
+
+For a delightful, four minute explanation of the whole leap year
+phenomenon, go watch [this youtube video][video].
+
+[video]: http://www.youtube.com/watch?v=xX96xng7sAE
+
+
+
+## Source
+
+JavaRanch Cattle Drive, exercise 3 [http://www.javaranch.com/leap.jsp](http://www.javaranch.com/leap.jsp)
+
+## Submitting Incomplete Solutions
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.
diff --git a/kotlin/leap/build.gradle b/kotlin/leap/build.gradle
new file mode 100644
index 0000000..e528a7b
--- /dev/null
+++ b/kotlin/leap/build.gradle
@@ -0,0 +1,28 @@
+buildscript {
+  ext.kotlin_version = '1.2.40'
+  repositories {
+    mavenCentral()
+  }
+  dependencies {
+    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+  }
+}
+
+apply plugin: 'kotlin'
+
+repositories {
+  mavenCentral()
+}
+
+dependencies {
+  compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+
+  testCompile 'junit:junit:4.12'
+  testCompile "org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version"
+}
+test {
+  testLogging {
+    exceptionFormat = 'full'
+    events = ["passed", "failed", "skipped"]
+  }
+}
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+11001
\ No newline at end of file
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+<link href="../css/base-style.css" rel="stylesheet" type="text/css"/>
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index 0000000..3dc4913
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index 0000000..443036f
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+</div>
+<div id="footer">
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+<input id="line-wrapping-toggle" type="checkbox" autocomplete="off"/>
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+</div>Generated by 
+<a href="http://www.gradle.org">Gradle 4.8</a> at Jun 21, 2018, 8:52:19 AM</p>
+</div>
+</div>
+</body>
+</html>
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+
+    function findTabs(container) {
+        return findChildElements(container, "DIV", "tab");
+    }
+
+    function findHeaders(container) {
+        var owner = findChildElements(container, "UL", "tabLinks");
+        return findChildElements(owner[0], "LI", null);
+    }
+
+    function findTitles(tabs) {
+        var titles = [];
+
+        for (var i = 0; i < tabs.length; i++) {
+            var tab = tabs[i];
+            var header = findChildElements(tab, "H2", null)[0];
+
+            header.parentNode.removeChild(header);
+
+            if (header.innerText) {
+                titles.push(header.innerText);
+            } else {
+                titles.push(header.textContent);
+            }
+        }
+
+        return titles;
+    }
+
+    function findChildElements(container, name, targetClass) {
+        var elements = [];
+        var children = container.childNodes;
+
+        for (var i = 0; i < children.length; i++) {
+            var child = children.item(i);
+
+            if (child.nodeType === 1 && child.nodeName === name) {
+                if (targetClass && child.className.indexOf(targetClass) < 0) {
+                    continue;
+                }
+
+                elements.push(child);
+            }
+        }
+
+        return elements;
+    }
+
+    // Entry point.
+
+    window.onload = function() {
+        initTabs();
+        initControls();
+    };
+} (window, window.document));
\ No newline at end of file
diff --git a/kotlin/leap/build/reports/tests/test/packages/default-package.html b/kotlin/leap/build/reports/tests/test/packages/default-package.html
new file mode 100644
index 0000000..6d61aa6
--- /dev/null
+++ b/kotlin/leap/build/reports/tests/test/packages/default-package.html
@@ -0,0 +1,103 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<meta http-equiv="x-ua-compatible" content="IE=edge"/>
+<title>Test results - Default package</title>
+<link href="../css/base-style.css" rel="stylesheet" type="text/css"/>
+<link href="../css/style.css" rel="stylesheet" type="text/css"/>
+<script src="../js/report.js" type="text/javascript"></script>
+</head>
+<body>
+<div id="content">
+<h1>Default package</h1>
+<div class="breadcrumbs">
+<a href="../index.html">all</a> &gt; default-package</div>
+<div id="summary">
+<table>
+<tr>
+<td>
+<div class="summaryGroup">
+<table>
+<tr>
+<td>
+<div class="infoBox" id="tests">
+<div class="counter">4</div>
+<p>tests</p>
+</div>
+</td>
+<td>
+<div class="infoBox" id="failures">
+<div class="counter">0</div>
+<p>failures</p>
+</div>
+</td>
+<td>
+<div class="infoBox" id="ignored">
+<div class="counter">0</div>
+<p>ignored</p>
+</div>
+</td>
+<td>
+<div class="infoBox" id="duration">
+<div class="counter">0.014s</div>
+<p>duration</p>
+</div>
+</td>
+</tr>
+</table>
+</div>
+</td>
+<td>
+<div class="infoBox success" id="successRate">
+<div class="percent">100%</div>
+<p>successful</p>
+</div>
+</td>
+</tr>
+</table>
+</div>
+<div id="tabs">
+<ul class="tabLinks">
+<li>
+<a href="#tab0">Classes</a>
+</li>
+</ul>
+<div id="tab0" class="tab">
+<h2>Classes</h2>
+<table>
+<thread>
+<tr>
+<th>Class</th>
+<th>Tests</th>
+<th>Failures</th>
+<th>Ignored</th>
+<th>Duration</th>
+<th>Success rate</th>
+</tr>
+</thread>
+<tr>
+<td class="success">
+<a href="../classes/LeapTest.html">LeapTest</a>
+</td>
+<td>4</td>
+<td>0</td>
+<td>0</td>
+<td>0.014s</td>
+<td class="success">100%</td>
+</tr>
+</table>
+</div>
+</div>
+<div id="footer">
+<p>
+<div>
+<label class="hidden" id="label-for-line-wrapping-toggle" for="line-wrapping-toggle">Wrap lines
+<input id="line-wrapping-toggle" type="checkbox" autocomplete="off"/>
+</label>
+</div>Generated by 
+<a href="http://www.gradle.org">Gradle 4.8</a> at Jun 21, 2018, 8:52:19 AM</p>
+</div>
+</div>
+</body>
+</html>
diff --git a/kotlin/leap/build/test-results/test/TEST-LeapTest.xml b/kotlin/leap/build/test-results/test/TEST-LeapTest.xml
new file mode 100644
index 0000000..f0927ed
--- /dev/null
+++ b/kotlin/leap/build/test-results/test/TEST-LeapTest.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<testsuite name="LeapTest" tests="4" skipped="0" failures="0" errors="0" timestamp="2018-06-21T13:52:19" hostname="kain" time="0.014">
+  <properties/>
+  <testcase name="yearDivisibleBy100NotDivisibleBy400" classname="LeapTest" time="0.013"/>
+  <testcase name="yearNotDivisibleBy4" classname="LeapTest" time="0.0"/>
+  <testcase name="yearDivisibleBy4NotDivisibleBy100" classname="LeapTest" time="0.001"/>
+  <testcase name="yearDivisibleBy400" classname="LeapTest" time="0.0"/>
+  <system-out><![CDATA[]]></system-out>
+  <system-err><![CDATA[]]></system-err>
+</testsuite>
diff --git a/kotlin/leap/build/test-results/test/binary/output.bin b/kotlin/leap/build/test-results/test/binary/output.bin
new file mode 100644
index 0000000..e69de29
diff --git a/kotlin/leap/build/test-results/test/binary/output.bin.idx b/kotlin/leap/build/test-results/test/binary/output.bin.idx
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index 0000000..f76dd23
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diff --git a/kotlin/leap/build/test-results/test/binary/results.bin b/kotlin/leap/build/test-results/test/binary/results.bin
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index 0000000..ab9cf6d
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diff --git a/kotlin/leap/build/tmp/jar/MANIFEST.MF b/kotlin/leap/build/tmp/jar/MANIFEST.MF
new file mode 100644
index 0000000..58630c0
--- /dev/null
+++ b/kotlin/leap/build/tmp/jar/MANIFEST.MF
@@ -0,0 +1,2 @@
+Manifest-Version: 1.0
+
diff --git a/kotlin/leap/src/main/kotlin/.keep b/kotlin/leap/src/main/kotlin/.keep
new file mode 100644
index 0000000..e69de29
diff --git a/kotlin/leap/src/main/kotlin/Year.kt b/kotlin/leap/src/main/kotlin/Year.kt
new file mode 100644
index 0000000..3181eec
--- /dev/null
+++ b/kotlin/leap/src/main/kotlin/Year.kt
@@ -0,0 +1,8 @@
+data class Year(val year: Int) {
+  val isLeap: Boolean
+    get() {
+      return (year % 400 == 0) || (year % 100 != 0 && year % 4 == 0)
+    }
+}
+
+
diff --git a/kotlin/leap/src/test/kotlin/LeapTest.kt b/kotlin/leap/src/test/kotlin/LeapTest.kt
new file mode 100644
index 0000000..7c9984d
--- /dev/null
+++ b/kotlin/leap/src/test/kotlin/LeapTest.kt
@@ -0,0 +1,28 @@
+import org.junit.Test
+import org.junit.Ignore
+import kotlin.test.assertFalse
+import kotlin.test.assertTrue
+
+class LeapTest {
+
+    @Test
+    fun yearNotDivisibleBy4() {
+        assertFalse(Year(2015).isLeap)
+    }
+
+    @Test
+    fun yearDivisibleBy4NotDivisibleBy100() {
+        assertTrue(Year(1996).isLeap)
+    }
+
+    @Test
+    fun yearDivisibleBy100NotDivisibleBy400() {
+        assertFalse(Year(2100).isLeap)
+    }
+
+    @Test
+    fun yearDivisibleBy400() {
+        assertTrue(Year(2000).isLeap)
+    }
+
+}
diff --git a/kotlin/rna-transcription/README.md b/kotlin/rna-transcription/README.md
new file mode 100644
index 0000000..86cd206
--- /dev/null
+++ b/kotlin/rna-transcription/README.md
@@ -0,0 +1,28 @@
+# RNA Transcription
+
+Given a DNA strand, return its RNA complement (per RNA transcription).
+
+Both DNA and RNA strands are a sequence of nucleotides.
+
+The four nucleotides found in DNA are adenine (**A**), cytosine (**C**),
+guanine (**G**) and thymine (**T**).
+
+The four nucleotides found in RNA are adenine (**A**), cytosine (**C**),
+guanine (**G**) and uracil (**U**).
+
+Given a DNA strand, its transcribed RNA strand is formed by replacing
+each nucleotide with its complement:
+
+* `G` -> `C`
+* `C` -> `G`
+* `T` -> `A`
+* `A` -> `U`
+
+
+
+## Source
+
+Rosalind [http://rosalind.info/problems/rna](http://rosalind.info/problems/rna)
+
+## Submitting Incomplete Solutions
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.
diff --git a/kotlin/rna-transcription/build.gradle b/kotlin/rna-transcription/build.gradle
new file mode 100644
index 0000000..e528a7b
--- /dev/null
+++ b/kotlin/rna-transcription/build.gradle
@@ -0,0 +1,28 @@
+buildscript {
+  ext.kotlin_version = '1.2.40'
+  repositories {
+    mavenCentral()
+  }
+  dependencies {
+    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+  }
+}
+
+apply plugin: 'kotlin'
+
+repositories {
+  mavenCentral()
+}
+
+dependencies {
+  compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+
+  testCompile 'junit:junit:4.12'
+  testCompile "org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version"
+}
+test {
+  testLogging {
+    exceptionFormat = 'full'
+    events = ["passed", "failed", "skipped"]
+  }
+}
diff --git a/kotlin/rna-transcription/src/main/kotlin/RnaTranscription.kt b/kotlin/rna-transcription/src/main/kotlin/RnaTranscription.kt
new file mode 100644
index 0000000..f895ae1
--- /dev/null
+++ b/kotlin/rna-transcription/src/main/kotlin/RnaTranscription.kt
@@ -0,0 +1 @@
+fun transcribeToRna(dna: String): String = ""
diff --git a/kotlin/rna-transcription/src/test/kotlin/RnaTranscriptionTest.kt b/kotlin/rna-transcription/src/test/kotlin/RnaTranscriptionTest.kt
new file mode 100644
index 0000000..04cea68
--- /dev/null
+++ b/kotlin/rna-transcription/src/test/kotlin/RnaTranscriptionTest.kt
@@ -0,0 +1,45 @@
+import org.junit.Test
+import org.junit.Ignore
+import kotlin.test.assertEquals
+
+class RnaTranscriptionTest {
+
+    /*
+      In Kotlin functions can be declared at top level in a file, meaning
+      you do not need to create a class to hold a function, like languages
+      such as Java, C# or Scala.
+
+      http://kotlinlang.org/docs/reference/functions.html#function-scope
+
+     */
+
+    @Test
+    fun cytosineComplementIsGuanine() {
+        assertEquals("G", transcribeToRna("C"))
+    }
+
+    @Ignore
+    @Test
+    fun guanineComplementIsCytosine() {
+        assertEquals("C", transcribeToRna("G"))
+    }
+
+    @Ignore
+    @Test
+    fun thymineComplementIsAdenine() {
+        assertEquals("A", transcribeToRna("T"))
+    }
+
+    @Ignore
+    @Test
+    fun adenineComplementIsUracil() {
+        assertEquals("U", transcribeToRna("A"))
+    }
+
+    @Ignore
+    @Test
+    fun rnaTranscription() {
+        assertEquals("UGCACCAGAAUU", transcribeToRna("ACGTGGTCTTAA"))
+    }
+
+}
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diff --git a/kotlin/two-fer/.gradle/buildOutputCleanup/buildOutputCleanup.lock b/kotlin/two-fer/.gradle/buildOutputCleanup/buildOutputCleanup.lock
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diff --git a/kotlin/two-fer/.gradle/buildOutputCleanup/cache.properties b/kotlin/two-fer/.gradle/buildOutputCleanup/cache.properties
new file mode 100644
index 0000000..1af571d
--- /dev/null
+++ b/kotlin/two-fer/.gradle/buildOutputCleanup/cache.properties
@@ -0,0 +1,2 @@
+#Thu Jun 21 08:14:56 CDT 2018
+gradle.version=4.8
diff --git a/kotlin/two-fer/.gradle/buildOutputCleanup/outputFiles.bin b/kotlin/two-fer/.gradle/buildOutputCleanup/outputFiles.bin
new file mode 100644
index 0000000..64e4264
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diff --git a/kotlin/two-fer/.gradle/vcsWorkingDirs/gc.properties b/kotlin/two-fer/.gradle/vcsWorkingDirs/gc.properties
new file mode 100644
index 0000000..e69de29
diff --git a/kotlin/two-fer/README.md b/kotlin/two-fer/README.md
new file mode 100644
index 0000000..adbb93c
--- /dev/null
+++ b/kotlin/two-fer/README.md
@@ -0,0 +1,22 @@
+# Two Fer
+
+`Two-fer` or `2-fer` is short for two for one. One for you and one for me.
+
+```text
+"One for X, one for me."
+```
+
+When X is a name or "you".
+
+If the given name is "Alice", the result should be "One for Alice, one for me."
+If no name is given, the result should be "One for you, one for me."
+
+
+
+
+## Source
+
+This is an exercise to introduce users to basic programming constructs, just after hello World. [https://en.wikipedia.org/wiki/Two-fer](https://en.wikipedia.org/wiki/Two-fer)
+
+## Submitting Incomplete Solutions
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.
diff --git a/kotlin/two-fer/build.gradle b/kotlin/two-fer/build.gradle
new file mode 100644
index 0000000..e528a7b
--- /dev/null
+++ b/kotlin/two-fer/build.gradle
@@ -0,0 +1,28 @@
+buildscript {
+  ext.kotlin_version = '1.2.40'
+  repositories {
+    mavenCentral()
+  }
+  dependencies {
+    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+  }
+}
+
+apply plugin: 'kotlin'
+
+repositories {
+  mavenCentral()
+}
+
+dependencies {
+  compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+
+  testCompile 'junit:junit:4.12'
+  testCompile "org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version"
+}
+test {
+  testLogging {
+    exceptionFormat = 'full'
+    events = ["passed", "failed", "skipped"]
+  }
+}
diff --git a/kotlin/two-fer/build/classes/kotlin/main/META-INF/two-fer.kotlin_module b/kotlin/two-fer/build/classes/kotlin/main/META-INF/two-fer.kotlin_module
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new file mode 100644
index 0000000..01aabac
--- /dev/null
+++ b/kotlin/two-fer/build/kotlin-build/version.txt
@@ -0,0 +1 @@
+11001
\ No newline at end of file
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diff --git a/kotlin/two-fer/build/reports/tests/test/css/style.css b/kotlin/two-fer/build/reports/tests/test/css/style.css
new file mode 100644
index 0000000..3dc4913
--- /dev/null
+++ b/kotlin/two-fer/build/reports/tests/test/css/style.css
@@ -0,0 +1,84 @@
+
+#summary {
+    margin-top: 30px;
+    margin-bottom: 40px;
+}
+
+#summary table {
+    border-collapse: collapse;
+}
+
+#summary td {
+    vertical-align: top;
+}
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+    color: #606060;
+}
+
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+    width: 110px;
+    padding-top: 15px;
+    padding-bottom: 15px;
+    text-align: center;
+}
+
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+    margin: 0;
+}
+
+.counter, .percent {
+    font-size: 120%;
+    font-weight: bold;
+    margin-bottom: 8px;
+}
+
+#duration {
+    width: 125px;
+}
+
+#successRate, .summaryGroup {
+    border: solid 2px #d0d0d0;
+    -moz-border-radius: 10px;
+    border-radius: 10px;
+}
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+}
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+}
+
+.success, .success a {
+    color: #008000;
+}
+
+div.success, #successRate.success {
+    background-color: #bbd9bb;
+    border-color: #008000;
+}
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+.failures, .failures a {
+    color: #b60808;
+}
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+.skipped, .skipped a {
+    color: #c09853;
+}
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+div.failures, #successRate.failures {
+    background-color: #ecdada;
+    border-color: #b60808;
+}
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+}
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+}
diff --git a/kotlin/two-fer/build/reports/tests/test/index.html b/kotlin/two-fer/build/reports/tests/test/index.html
new file mode 100644
index 0000000..c6a1dda
--- /dev/null
+++ b/kotlin/two-fer/build/reports/tests/test/index.html
@@ -0,0 +1,132 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<meta http-equiv="x-ua-compatible" content="IE=edge"/>
+<title>Test results - Test Summary</title>
+<link href="css/base-style.css" rel="stylesheet" type="text/css"/>
+<link href="css/style.css" rel="stylesheet" type="text/css"/>
+<script src="js/report.js" type="text/javascript"></script>
+</head>
+<body>
+<div id="content">
+<h1>Test Summary</h1>
+<div id="summary">
+<table>
+<tr>
+<td>
+<div class="summaryGroup">
+<table>
+<tr>
+<td>
+<div class="infoBox" id="tests">
+<div class="counter">4</div>
+<p>tests</p>
+</div>
+</td>
+<td>
+<div class="infoBox" id="failures">
+<div class="counter">0</div>
+<p>failures</p>
+</div>
+</td>
+<td>
+<div class="infoBox" id="ignored">
+<div class="counter">0</div>
+<p>ignored</p>
+</div>
+</td>
+<td>
+<div class="infoBox" id="duration">
+<div class="counter">0.011s</div>
+<p>duration</p>
+</div>
+</td>
+</tr>
+</table>
+</div>
+</td>
+<td>
+<div class="infoBox success" id="successRate">
+<div class="percent">100%</div>
+<p>successful</p>
+</div>
+</td>
+</tr>
+</table>
+</div>
+<div id="tabs">
+<ul class="tabLinks">
+<li>
+<a href="#tab0">Packages</a>
+</li>
+<li>
+<a href="#tab1">Classes</a>
+</li>
+</ul>
+<div id="tab0" class="tab">
+<h2>Packages</h2>
+<table>
+<thead>
+<tr>
+<th>Package</th>
+<th>Tests</th>
+<th>Failures</th>
+<th>Ignored</th>
+<th>Duration</th>
+<th>Success rate</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td class="success">
+<a href="packages/default-package.html">default-package</a>
+</td>
+<td>4</td>
+<td>0</td>
+<td>0</td>
+<td>0.011s</td>
+<td class="success">100%</td>
+</tr>
+</tbody>
+</table>
+</div>
+<div id="tab1" class="tab">
+<h2>Classes</h2>
+<table>
+<thead>
+<tr>
+<th>Class</th>
+<th>Tests</th>
+<th>Failures</th>
+<th>Ignored</th>
+<th>Duration</th>
+<th>Success rate</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td class="success"/>
+<a href="classes/TwoferTest.html">TwoferTest</a>
+<td>4</td>
+<td>0</td>
+<td>0</td>
+<td>0.011s</td>
+<td class="success">100%</td>
+</tr>
+</tbody>
+</table>
+</div>
+</div>
+<div id="footer">
+<p>
+<div>
+<label class="hidden" id="label-for-line-wrapping-toggle" for="line-wrapping-toggle">Wrap lines
+<input id="line-wrapping-toggle" type="checkbox" autocomplete="off"/>
+</label>
+</div>Generated by 
+<a href="http://www.gradle.org">Gradle 4.8</a> at Jun 21, 2018, 8:22:59 AM</p>
+</div>
+</div>
+</body>
+</html>
diff --git a/kotlin/two-fer/build/reports/tests/test/js/report.js b/kotlin/two-fer/build/reports/tests/test/js/report.js
new file mode 100644
index 0000000..83bab4a
--- /dev/null
+++ b/kotlin/two-fer/build/reports/tests/test/js/report.js
@@ -0,0 +1,194 @@
+(function (window, document) {
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+
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+
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+
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+
+        tabs.tabs = findTabs(container);
+        tabs.titles = findTitles(tabs.tabs);
+        tabs.headers = findHeaders(container);
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+        tabs.deselectAll = deselectAll;
+        tabs.select(0);
+
+        return true;
+    }
+
+    function getCheckBox() {
+        return document.getElementById("line-wrapping-toggle");
+    }
+
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+        return document.getElementById("label-for-line-wrapping-toggle");
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+    function findCodeBlocks() {
+        var spans = document.getElementById("tabs").getElementsByTagName("span");
+        var codeBlocks = [];
+        for (var i = 0; i < spans.length; ++i) {
+            if (spans[i].className.indexOf("code") >= 0) {
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+            }
+        }
+        return codeBlocks;
+    }
+
+    function forAllCodeBlocks(operation) {
+        var codeBlocks = findCodeBlocks();
+
+        for (var i = 0; i < codeBlocks.length; ++i) {
+            operation(codeBlocks[i], "wrapped");
+        }
+    }
+
+    function toggleLineWrapping() {
+        var checkBox = getCheckBox();
+
+        if (checkBox.checked) {
+            forAllCodeBlocks(addClass);
+        } else {
+            forAllCodeBlocks(removeClass);
+        }
+    }
+
+    function initControls() {
+        if (findCodeBlocks().length > 0) {
+            var checkBox = getCheckBox();
+            var label = getLabelForCheckBox();
+
+            checkBox.onclick = toggleLineWrapping;
+            checkBox.checked = false;
+
+            removeClass(label, "hidden");
+         }
+    }
+
+    function switchTab() {
+        var id = this.id.substr(1);
+
+        for (var i = 0; i < tabs.tabs.length; i++) {
+            if (tabs.tabs[i].id === id) {
+                tabs.select(i);
+                break;
+            }
+        }
+
+        return false;
+    }
+
+    function select(i) {
+        this.deselectAll();
+
+        changeElementClass(this.tabs[i], "tab selected");
+        changeElementClass(this.headers[i], "selected");
+
+        while (this.headers[i].firstChild) {
+            this.headers[i].removeChild(this.headers[i].firstChild);
+        }
+
+        var h2 = document.createElement("H2");
+
+        h2.appendChild(document.createTextNode(this.titles[i]));
+        this.headers[i].appendChild(h2);
+    }
+
+    function deselectAll() {
+        for (var i = 0; i < this.tabs.length; i++) {
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+            changeElementClass(this.headers[i], "deselected");
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+            while (this.headers[i].firstChild) {
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+
+            a.setAttribute("id", "ltab" + i);
+            a.setAttribute("href", "#tab" + i);
+            a.onclick = switchTab;
+            a.appendChild(document.createTextNode(this.titles[i]));
+
+            this.headers[i].appendChild(a);
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+
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+
+    window.onload = function() {
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+} (window, window.document));
\ No newline at end of file
diff --git a/kotlin/two-fer/build/reports/tests/test/packages/default-package.html b/kotlin/two-fer/build/reports/tests/test/packages/default-package.html
new file mode 100644
index 0000000..d3fae74
--- /dev/null
+++ b/kotlin/two-fer/build/reports/tests/test/packages/default-package.html
@@ -0,0 +1,103 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<meta http-equiv="x-ua-compatible" content="IE=edge"/>
+<title>Test results - Default package</title>
+<link href="../css/base-style.css" rel="stylesheet" type="text/css"/>
+<link href="../css/style.css" rel="stylesheet" type="text/css"/>
+<script src="../js/report.js" type="text/javascript"></script>
+</head>
+<body>
+<div id="content">
+<h1>Default package</h1>
+<div class="breadcrumbs">
+<a href="../index.html">all</a> &gt; default-package</div>
+<div id="summary">
+<table>
+<tr>
+<td>
+<div class="summaryGroup">
+<table>
+<tr>
+<td>
+<div class="infoBox" id="tests">
+<div class="counter">4</div>
+<p>tests</p>
+</div>
+</td>
+<td>
+<div class="infoBox" id="failures">
+<div class="counter">0</div>
+<p>failures</p>
+</div>
+</td>
+<td>
+<div class="infoBox" id="ignored">
+<div class="counter">0</div>
+<p>ignored</p>
+</div>
+</td>
+<td>
+<div class="infoBox" id="duration">
+<div class="counter">0.011s</div>
+<p>duration</p>
+</div>
+</td>
+</tr>
+</table>
+</div>
+</td>
+<td>
+<div class="infoBox success" id="successRate">
+<div class="percent">100%</div>
+<p>successful</p>
+</div>
+</td>
+</tr>
+</table>
+</div>
+<div id="tabs">
+<ul class="tabLinks">
+<li>
+<a href="#tab0">Classes</a>
+</li>
+</ul>
+<div id="tab0" class="tab">
+<h2>Classes</h2>
+<table>
+<thread>
+<tr>
+<th>Class</th>
+<th>Tests</th>
+<th>Failures</th>
+<th>Ignored</th>
+<th>Duration</th>
+<th>Success rate</th>
+</tr>
+</thread>
+<tr>
+<td class="success">
+<a href="../classes/TwoferTest.html">TwoferTest</a>
+</td>
+<td>4</td>
+<td>0</td>
+<td>0</td>
+<td>0.011s</td>
+<td class="success">100%</td>
+</tr>
+</table>
+</div>
+</div>
+<div id="footer">
+<p>
+<div>
+<label class="hidden" id="label-for-line-wrapping-toggle" for="line-wrapping-toggle">Wrap lines
+<input id="line-wrapping-toggle" type="checkbox" autocomplete="off"/>
+</label>
+</div>Generated by 
+<a href="http://www.gradle.org">Gradle 4.8</a> at Jun 21, 2018, 8:22:59 AM</p>
+</div>
+</div>
+</body>
+</html>
diff --git a/kotlin/two-fer/build/test-results/test/TEST-TwoferTest.xml b/kotlin/two-fer/build/test-results/test/TEST-TwoferTest.xml
new file mode 100644
index 0000000..0481717
--- /dev/null
+++ b/kotlin/two-fer/build/test-results/test/TEST-TwoferTest.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<testsuite name="TwoferTest" tests="4" skipped="0" failures="0" errors="0" timestamp="2018-06-21T13:22:59" hostname="kain" time="0.012">
+  <properties/>
+  <testcase name="noNameGiven" classname="TwoferTest" time="0.011"/>
+  <testcase name="emptyStringGiven" classname="TwoferTest" time="0.0"/>
+  <testcase name="aNameGiven" classname="TwoferTest" time="0.0"/>
+  <testcase name="anotherNameGiven" classname="TwoferTest" time="0.0"/>
+  <system-out><![CDATA[]]></system-out>
+  <system-err><![CDATA[]]></system-err>
+</testsuite>
diff --git a/kotlin/two-fer/build/test-results/test/binary/output.bin b/kotlin/two-fer/build/test-results/test/binary/output.bin
new file mode 100644
index 0000000..e69de29
diff --git a/kotlin/two-fer/build/test-results/test/binary/output.bin.idx b/kotlin/two-fer/build/test-results/test/binary/output.bin.idx
new file mode 100644
index 0000000..f76dd23
Binary files /dev/null and b/kotlin/two-fer/build/test-results/test/binary/output.bin.idx differ
diff --git a/kotlin/two-fer/build/test-results/test/binary/results.bin b/kotlin/two-fer/build/test-results/test/binary/results.bin
new file mode 100644
index 0000000..ff343c6
Binary files /dev/null and b/kotlin/two-fer/build/test-results/test/binary/results.bin differ
diff --git a/kotlin/two-fer/src/main/kotlin/.keep b/kotlin/two-fer/src/main/kotlin/.keep
new file mode 100644
index 0000000..e69de29
diff --git a/kotlin/two-fer/src/main/kotlin/TwoFer.kt b/kotlin/two-fer/src/main/kotlin/TwoFer.kt
new file mode 100644
index 0000000..60ff8b4
--- /dev/null
+++ b/kotlin/two-fer/src/main/kotlin/TwoFer.kt
@@ -0,0 +1,3 @@
+fun twofer(name: String?="you"): String {
+  return "One for "+name+", one for me."
+}
diff --git a/kotlin/two-fer/src/test/kotlin/TwoferTest.kt b/kotlin/two-fer/src/test/kotlin/TwoferTest.kt
new file mode 100644
index 0000000..8cb3bb9
--- /dev/null
+++ b/kotlin/two-fer/src/test/kotlin/TwoferTest.kt
@@ -0,0 +1,27 @@
+import org.junit.Ignore
+import org.junit.Test
+import kotlin.test.assertEquals
+
+class TwoferTest {
+
+    @Test
+    fun noNameGiven() {
+        assertEquals("One for you, one for me.", twofer())
+    }
+
+    @Test
+    fun aNameGiven() {
+        assertEquals("One for Alice, one for me.", twofer("Alice"))
+    }
+
+    @Test
+    fun anotherNameGiven() {
+        assertEquals("One for Bob, one for me.", twofer("Bob"))
+    }
+
+    @Test
+    fun emptyStringGiven() {
+        assertEquals("One for , one for me.", twofer(""))
+    }
+
+}