day08

day08/day.go

@@ -0,0 +1,86 @@
+package day08
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"tools"
+)
+
+func shiftRight(display *tools.GridToggle, row, maxCol int) {
+	buf := display.State(maxCol, row)
+	for x := maxCol; x > 0; x-- {
+		display.Set(x, row, display.State(x-1, row))
+	}
+	display.Set(0, row, buf)
+}
+
+func shiftDown(display *tools.GridToggle, column, maxRow int) {
+	buf := display.State(column, maxRow)
+	for y := maxRow; y > 0; y-- {
+		display.Set(column, y, display.State(column, y-1))
+	}
+	display.Set(column, 0, buf)
+}
+
+func printDisplay(display tools.GridToggle, dimX, dimY int) {
+	for y := 0; y <= dimY; y++ {
+		for x := 0; x <= dimX; x++ {
+			if display.State(x, y) {
+				fmt.Print("#")
+			} else {
+				fmt.Print(" ")
+			}
+		}
+		fmt.Println()
+	}
+}
+
+func buildDisplayFromInput(input []string) tools.GridToggle {
+	dims := strings.Split(input[0], ",")
+	dimX, _ := strconv.Atoi(dims[0])
+	dimY, _ := strconv.Atoi(dims[1])
+	dimX--
+	dimY--
+
+	display := tools.NewGridToggle()
+	for _, instruction := range input[1:] {
+		parts := strings.Split(instruction, " ")
+		switch parts[0] {
+		case "rect":
+			rectxy := strings.Split(parts[1], "x")
+			rectx, _ := strconv.Atoi(rectxy[0])
+			recty, _ := strconv.Atoi(rectxy[1])
+			for x := 0; x < rectx; x++ {
+				for y := 0; y < recty; y++ {
+					display.Set(x, y, tools.On)
+				}
+			}
+		case "rotate":
+			which, _ := strconv.Atoi(parts[2][2:])
+			amount, _ := strconv.Atoi(parts[4])
+			switch parts[1] {
+			case "row":
+				for i := 0; i < amount; i++ {
+					shiftRight(&display, which, dimX)
+				}
+			case "column":
+				for i := 0; i < amount; i++ {
+					shiftDown(&display, which, dimY)
+				}
+			}
+		}
+	}
+
+	return display
+}
+
+func Part1(puzzle tools.AoCPuzzle) interface{} {
+	return buildDisplayFromInput(puzzle.GetInputArray()).GetOnCount()
+}
+
+func Part2(puzzle tools.AoCPuzzle) interface{} {
+	display := buildDisplayFromInput(puzzle.GetInputArray())
+	printDisplay(display, 49, 5)
+	return 0
+}

inputs/8

@@ -0,0 +1,154 @@
+50,6
+rect 1x1
+rotate row y=0 by 2
+rect 1x1
+rotate row y=0 by 5
+rect 1x1
+rotate row y=0 by 3
+rect 1x1
+rotate row y=0 by 3
+rect 2x1
+rotate row y=0 by 5
+rect 1x1
+rotate row y=0 by 5
+rect 4x1
+rotate row y=0 by 2
+rect 1x1
+rotate row y=0 by 2
+rect 1x1
+rotate row y=0 by 5
+rect 4x1
+rotate row y=0 by 3
+rect 2x1
+rotate row y=0 by 5
+rect 4x1
+rotate row y=0 by 2
+rect 1x2
+rotate row y=1 by 6
+rotate row y=0 by 2
+rect 1x2
+rotate column x=32 by 1
+rotate column x=23 by 1
+rotate column x=13 by 1
+rotate row y=0 by 6
+rotate column x=0 by 1
+rect 5x1
+rotate row y=0 by 2
+rotate column x=30 by 1
+rotate row y=1 by 20
+rotate row y=0 by 18
+rotate column x=13 by 1
+rotate column x=10 by 1
+rotate column x=7 by 1
+rotate column x=2 by 1
+rotate column x=0 by 1
+rect 17x1
+rotate column x=16 by 3
+rotate row y=3 by 7
+rotate row y=0 by 5
+rotate column x=2 by 1
+rotate column x=0 by 1
+rect 4x1
+rotate column x=28 by 1
+rotate row y=1 by 24
+rotate row y=0 by 21
+rotate column x=19 by 1
+rotate column x=17 by 1
+rotate column x=16 by 1
+rotate column x=14 by 1
+rotate column x=12 by 2
+rotate column x=11 by 1
+rotate column x=9 by 1
+rotate column x=8 by 1
+rotate column x=7 by 1
+rotate column x=6 by 1
+rotate column x=4 by 1
+rotate column x=2 by 1
+rotate column x=0 by 1
+rect 20x1
+rotate column x=47 by 1
+rotate column x=40 by 2
+rotate column x=35 by 2
+rotate column x=30 by 2
+rotate column x=10 by 3
+rotate column x=5 by 3
+rotate row y=4 by 20
+rotate row y=3 by 10
+rotate row y=2 by 20
+rotate row y=1 by 16
+rotate row y=0 by 9
+rotate column x=7 by 2
+rotate column x=5 by 2
+rotate column x=3 by 2
+rotate column x=0 by 2
+rect 9x2
+rotate column x=22 by 2
+rotate row y=3 by 40
+rotate row y=1 by 20
+rotate row y=0 by 20
+rotate column x=18 by 1
+rotate column x=17 by 2
+rotate column x=16 by 1
+rotate column x=15 by 2
+rotate column x=13 by 1
+rotate column x=12 by 1
+rotate column x=11 by 1
+rotate column x=10 by 1
+rotate column x=8 by 3
+rotate column x=7 by 1
+rotate column x=6 by 1
+rotate column x=5 by 1
+rotate column x=3 by 1
+rotate column x=2 by 1
+rotate column x=1 by 1
+rotate column x=0 by 1
+rect 19x1
+rotate column x=44 by 2
+rotate column x=40 by 3
+rotate column x=29 by 1
+rotate column x=27 by 2
+rotate column x=25 by 5
+rotate column x=24 by 2
+rotate column x=22 by 2
+rotate column x=20 by 5
+rotate column x=14 by 3
+rotate column x=12 by 2
+rotate column x=10 by 4
+rotate column x=9 by 3
+rotate column x=7 by 3
+rotate column x=3 by 5
+rotate column x=2 by 2
+rotate row y=5 by 10
+rotate row y=4 by 8
+rotate row y=3 by 8
+rotate row y=2 by 48
+rotate row y=1 by 47
+rotate row y=0 by 40
+rotate column x=47 by 5
+rotate column x=46 by 5
+rotate column x=45 by 4
+rotate column x=43 by 2
+rotate column x=42 by 3
+rotate column x=41 by 2
+rotate column x=38 by 5
+rotate column x=37 by 5
+rotate column x=36 by 5
+rotate column x=33 by 1
+rotate column x=28 by 1
+rotate column x=27 by 5
+rotate column x=26 by 5
+rotate column x=25 by 1
+rotate column x=23 by 5
+rotate column x=22 by 1
+rotate column x=21 by 2
+rotate column x=18 by 1
+rotate column x=17 by 3
+rotate column x=12 by 2
+rotate column x=11 by 2
+rotate column x=7 by 5
+rotate column x=6 by 5
+rotate column x=5 by 4
+rotate column x=3 by 5
+rotate column x=2 by 5
+rotate column x=1 by 3
+rotate column x=0 by 4

inputs/8_test

@@ -0,0 +1,5 @@
+7,3
+rect 3x2
+rotate column x=1 by 1
+rotate row y=0 by 4
+rotate column x=1 by 1

main.go

@@ -8,6 +8,7 @@ import (
 	"aoc2016/day05"
 	"aoc2016/day06"
 	"aoc2016/day07"
+	"aoc2016/day08"
 	"flag"
 	"fmt"
 	"os"
@@ -32,7 +33,7 @@ func initDayFunctions() {
 		5: {1: day05.Part1, 2: day05.Part2},
 		6: {1: day06.Part1, 2: day06.Part2},
 		7: {1: day07.Part1, 2: day07.Part2},
-		//		8:  {1: day08.Part1, 2: day08.Part2},
+		8: {1: day08.Part1, 2: day08.Part2},
 		//		9:  {1: day09.Part1, 2: day09.Part2},
 		//		10: {1: day10.Part1, 2: day10.Part2},
 		//		11: {1: day11.Part1, 2: day11.Part2},