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@@ -110,11 +110,56 @@ func part1(input [][]octo) int {
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return flashed
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}
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+func allFlashed(input [][]octo) bool {
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+ for _, row := range input {
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+ for _, octo := range row {
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+ if !octo.flashed {
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+ return false
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+ }
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+ }
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+ }
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+
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+ return true
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+}
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+
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+func part2(input [][]octo) int {
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+ var flashed int
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+ count := 1
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+ for {
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+ for y, row := range input {
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+ for x, _ := range row {
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+ if input[y][x].flashed {
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+ continue
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+ }
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+
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+ input[y][x].value++
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+ if input[y][x].value > 9 {
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+ input[y][x].value = 0
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+ input[y][x].flashed = true
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+ flashed++
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+ flashed += doNeighbors(input, x, y)
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+ }
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+ }
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+ }
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+
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+ if allFlashed(input) {
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+ break
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+ }
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+
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+ count++
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+ reset(input)
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+ }
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+
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+ return count
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+}
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+
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func main() {
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if len(os.Args) < 2 {
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log.Fatal("Please provide a file name as argument")
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}
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input := readInput(os.Args[1])
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- fmt.Println(part1(input))
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+ fmt.Println("Part1:", part1(input))
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+ input = readInput(os.Args[1])
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+ fmt.Println("Part2:", part2(input))
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}
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