2019 Day 5 Complete

* Also: Move helpers to their own submodule, for importing
2019-12-05 08:04:30 -06:00
parent 589790fcda
commit 3d955a924d
4 changed files with 211 additions and 12 deletions
--- a/helpers/helpers.go
+++ b/helpers/helpers.go
@@ -0,0 +1,143 @@
+package aoc
+
+import (
+	"bufio"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"strconv"
+	"strings"
+)
+
+// Some handy Constants
+const (
+	BORDER_NS = "\u2502"
+	BORDER_WE = "\u2500"
+
+	BORDER_NW = "\u250C"
+	BORDER_NE = "\u2510"
+	BORDER_SW = "\u2514"
+	BORDER_SE = "\u2518"
+
+	FILL_CHAR    = "\u2588"
+	CLEAR_SCREEN = "\033[H\033[2J"
+
+	MAX_INT = int(^uint(0) >> 1)
+	MIN_INT = -MAX_INT - 1
+)
+
+func ArgIsSet(a string) bool {
+	for i := range os.Args {
+		if os.Args[i] == a || strings.HasPrefix(os.Args[i], a+"=") {
+			return true
+		}
+	}
+	return false
+}
+
+func GetArgValue(a string) string {
+	for i := range os.Args {
+		if strings.HasPrefix(os.Args[i], a+"=") {
+			return strings.TrimPrefix(os.Args[i], a+"=")
+		}
+	}
+	return ""
+}
+
+func GetArgNumber(i int) string {
+	if len(os.Args) > i {
+		return os.Args[i]
+	}
+	return ""
+}
+
+func StdinToStringSlice() []string {
+	var input []string
+	scanner := bufio.NewScanner(os.Stdin)
+	for scanner.Scan() {
+		input = append(input, scanner.Text())
+	}
+	return input
+}
+
+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 Itoa(i int) string {
+	return strconv.Itoa(i)
+}
+
+func StdinToString() string {
+	var input string
+	scanner := bufio.NewScanner(os.Stdin)
+	for scanner.Scan() {
+		input += scanner.Text()
+	}
+	return input
+}
+
+func FileToStringSlice(fn string) []string {
+	return strings.Split(string(FileToBytes(fn)), "\n")
+}
+
+func FileToString(fn string) string {
+	return string(FileToBytes(fn))
+}
+
+func FileToBytes(fn string) []byte {
+	var c []byte
+	var err error
+	c, err = ioutil.ReadFile(fn)
+	if err != nil {
+		fmt.Println("Unable to read file: " + fn)
+		os.Exit(1)
+	}
+	return c
+}
+
+func PrintProgress(curr, total int) {
+	pct := int(float64(curr)/float64(total)) * 100
+	for i := 0; i < 100; i += 10 {
+		if pct > i {
+			fmt.Print(FILL_CHAR)
+		}
+	}
+}
+
+func StringPermutations(str string) []string {
+	perms := stringPermHelper(str, 0)
+	var wrk []string
+	// Now de-dupe
+	for i := range perms {
+		var found bool
+		for j := range wrk {
+			if wrk[j] == perms[i] {
+				found = true
+			}
+		}
+		if !found {
+			wrk = append(wrk, perms[i])
+		}
+	}
+	return wrk
+}
+
+func stringPermHelper(str string, i int) []string {
+	ret := []string{str}
+	if i != len(str) {
+		r := []rune(str)
+		for j := i; j < len(r); j++ {
+			r[i], r[j] = r[j], r[i]
+			ret = append(ret, stringPermHelper(string(r), i+1)...)
+			r[i], r[j] = r[j], r[i]
+		}
+	}
+	return ret
+}