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@@ -64,6 +64,66 @@ func sum(numbers []int) int {
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return sum
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}
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+func getChar(number int) byte {
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+ switch number {
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+ case 2:
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+ return '2'
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+ case 1:
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+ return '1'
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+ case 0:
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+ return '0'
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+ case -1:
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+ return '-'
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+ case -2:
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+ return '='
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+ }
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+
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+ return ' '
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+}
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+
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+func toSnafu(number int) string {
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+ multiplier := 5
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+ modifier := 1
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+ count := 1
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+ var result []byte
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+
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+ found := false
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+ toMatch := 0
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+ for {
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+ for i := 1; i < 3; i++ {
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+ if i*modifier >= number {
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+ found = true
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+ result = append(result, getChar(i))
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+ toMatch = modifier*i - number
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+ break
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+ }
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+ }
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+
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+ if found {
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+ break
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+ }
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+
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+ modifier *= multiplier
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+ count++
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+ }
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+
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+ for i := 1; i < count; i++ {
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+ modifier /= multiplier
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+
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+ for j := -2; j <= 2; j++ {
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+ p := j * modifier
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+ delta := toMatch + p
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+ if delta >= 0 || 0-delta < 2*modifier/multiplier {
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+ result = append(result, getChar(j))
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+ toMatch = delta
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+ break
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+ }
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+ }
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+ }
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+
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+ return string(result)
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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("You need to specify a file!")
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@@ -77,5 +137,7 @@ func main() {
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}
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numbers := readInput(file)
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- fmt.Println(sum(numbers))
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+ sum := sum(numbers)
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+ fmt.Println(sum)
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+ fmt.Println(toSnafu(sum))
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}
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