Day 3 Complete

Also clean up some of the problem files

day01/problem

@@ -1,19 +1,4 @@
-                                                                                                                Advent of Code
+Advent of Code
-
-     • [About]
-     • [AoC++]
-     • [Events]
-     • [Settings]
-     • [Log Out]
-
-   br0xen (AoC++) 2*
-
-                                                                                                                   <y>2016</y>
-
-     • [Calendar]
-     • [Leaderboard]
-     • [Stats]
-     • [Sponsors]
 
 --- Day 1: No Time for a Taxicab ---
 
@@ -56,8 +41,6 @@
 
    If you still want to see it, you can get your puzzle input.
 
-   You can also [Shareon Twitter Google+ Reddit] this puzzle.
-
 References
 
    Visible links
@@ -76,6 +59,3 @@ References
    . https://en.wikipedia.org/wiki/Taxicab_geometry
    . http://adventofcode.com/2016
    . http://adventofcode.com/2016/day/1/input
-   . https://twitter.com/intent/tweet?text=I%27ve+completed+%22No+Time+for+a+Taxicab%22+%2D+Day+1+%2D+Advent+of+Code+2016&url=http%3A%2F%2Fadventofcode%2Ecom%2F2016%2Fday%2F1&related=ericwastl&hashtags=AdventOfCode
-   . https://plus.google.com/share?url=http%3A%2F%2Fadventofcode%2Ecom%2F2016%2Fday%2F1
-   . http://www.reddit.com/submit?url=http%3A%2F%2Fadventofcode%2Ecom%2F2016%2Fday%2F1&title=I%27ve+completed+%22No+Time+for+a+Taxicab%22+%2D+Day+1+%2D+Advent+of+Code+2016

day02/problem

@@ -1,19 +1,4 @@
-                                                       Advent of Code
+Advent of Code
-
-     • [About]
-     • [AoC++]
-     • [Events]
-     • [Settings]
-     • [Log Out]
-
-   br0xen (AoC++) 4*
-
-                                                          <y>2016</y>
-
-     • [Calendar]
-     • [Leaderboard]
-     • [Stats]
-     • [Sponsors]
 
 --- Day 2: Bathroom Security ---
 
@@ -89,8 +74,6 @@
 
    If you still want to see it, you can get your puzzle input.
 
-   You can also [Shareon Twitter Google+ Reddit] this puzzle.
-
 References
 
    Visible links
@@ -108,6 +91,3 @@ References
    . http://adventofcode.com/2016/sponsors
    . http://adventofcode.com/2016
    . http://adventofcode.com/2016/day/2/input
-   . https://twitter.com/intent/tweet?text=I%27ve+completed+%22Bathroom+Security%22+%2D+Day+2+%2D+Advent+of+Code+2016&url=http%3A%2F%2Fadventofcode%2Ecom%2F2016%2Fday%2F2&related=ericwastl&hashtags=AdventOfCode
-   . https://plus.google.com/share?url=http%3A%2F%2Fadventofcode%2Ecom%2F2016%2Fday%2F2
-   . http://www.reddit.com/submit?url=http%3A%2F%2Fadventofcode%2Ecom%2F2016%2Fday%2F2&title=I%27ve+completed+%22Bathroom+Security%22+%2D+Day+2+%2D+Advent+of+Code+2016

day03/main.go

@@ -0,0 +1,88 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"log"
+	"os"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+func main() {
+	input := stdinToStringSlice()
+	puzzleOne(input)
+	puzzleTwo(input)
+}
+
+func puzzleOne(input []string) {
+	fmt.Println("=== Puzzle One ===")
+	var numGood int
+	var sides []int
+	for i := range input {
+		pts := strings.Fields(input[i])
+		sides = []int{atoi(pts[0]), atoi(pts[1]), atoi(pts[2])}
+		if isValidTriangle(sides) {
+			numGood++
+		}
+	}
+	fmt.Println("Found Good: ", numGood)
+}
+
+func puzzleTwo(input []string) {
+	fmt.Println("=== Puzzle Two ===")
+	var numGood int
+	var sides1, sides2, sides3 []int
+	for i := range input {
+		pts := strings.Fields(input[i])
+		sides1 = append(sides1, atoi(pts[0]))
+		sides2 = append(sides2, atoi(pts[1]))
+		sides3 = append(sides3, atoi(pts[2]))
+		if len(sides1) == 3 {
+			if isValidTriangle(sides1) {
+				numGood++
+			}
+			if isValidTriangle(sides2) {
+				numGood++
+			}
+			if isValidTriangle(sides3) {
+				numGood++
+			}
+			sides1 = []int{}
+			sides2 = []int{}
+			sides3 = []int{}
+		}
+	}
+	fmt.Println("Found Good: ", numGood)
+}
+
+func isValidTriangle(sides []int) bool {
+	sort.Ints(sides)
+	if sides[2] < (sides[1] + sides[0]) {
+		return true
+	}
+	return false
+}
+
+func itoa(i int) string {
+	return strconv.Itoa(i)
+}
+
+func atoi(i string) int {
+	var ret int
+	var err error
+	if ret, err = strconv.Atoi(i); err != nil {
+		log.Fatal("Invalid Atoi")
+	}
+	return ret
+}
+
+func stdinToStringSlice() []string {
+	var input []string
+	scanner := bufio.NewScanner(os.Stdin)
+	for scanner.Scan() {
+		input = append(input, scanner.Text())
+	}
+	return input
+}

day03/problem

@@ -0,0 +1,59 @@
+Advent of Code
+
+--- Day 3: Squares With Three Sides ---
+
+   Now that you can think clearly, you move deeper into the labyrinth of hallways and office
+   furniture that makes up this part of Easter Bunny HQ. This must be a graphic design
+   department; the walls are covered in specifications for triangles.
+
+   Or are they?
+
+   The design document gives the side lengths of each triangle it describes, but... 5 10 25? Some
+   of these aren't triangles. You can't help but mark the impossible ones.
+
+   In a valid triangle, the sum of any two sides must be larger than the remaining side. For
+   example, the "triangle" given above is impossible, because 5 + 10 is not larger than 25.
+
+   In your puzzle input, how many of the listed triangles are possible?
+
+   Your puzzle answer was 869.
+
+   The first half of this puzzle is complete! It provides one gold star: *
+
+--- Part Two ---
+
+   Now that you've helpfully marked up their design documents, it occurs to you that triangles
+   are specified in groups of three vertically. Each set of three numbers in a column specifies a
+   triangle. Rows are unrelated.
+
+   For example, given the following specification, numbers with the same hundreds digit would be
+   part of the same triangle:
+
+ 101 301 501
+ 102 302 502
+ 103 303 503
+ 201 401 601
+ 202 402 602
+ 203 403 603
+
+   In your puzzle input, and instead reading by columns, how many of the listed triangles are
+   possible?
+
+   Although it hasn't changed, you can still get your puzzle input.
+
+References
+
+   Visible links
+   . http://adventofcode.com/
+   . http://adventofcode.com/2016/about
+   . http://adventofcode.com/2016/support
+   . http://adventofcode.com/2016/events
+   . http://adventofcode.com/2016/settings
+   . http://adventofcode.com/2016/auth/logout
+   . http://adventofcode.com/2016
+   . http://adventofcode.com/2016
+   . http://adventofcode.com/2016/leaderboard
+   . http://adventofcode.com/2016/stats
+   . http://adventofcode.com/2016/sponsors
+   . http://adventofcode.com/2016/sponsors
+   . http://adventofcode.com/2016/day/3/input