diff --git a/internal/2025/DayTwo/code.go b/internal/2025/DayTwo/code.go index 2236dd2..6a57849 100644 --- a/internal/2025/DayTwo/code.go +++ b/internal/2025/DayTwo/code.go @@ -39,5 +39,32 @@ func PartOne(input []string) int { } func PartTwo(input []string) int { - return 0 + sum := 0 + for _, line := range input { + for newRange := range strings.SplitSeq(line, ",") { + parts := strings.Split(newRange, "-") + start, _ := strconv.Atoi(parts[0]) + end, _ := strconv.Atoi(parts[1]) + for id := start; id <= end; id++ { + sID := strconv.Itoa(id) + found := false + for patternLength := 1; patternLength <= len(sID)/2 && !found; patternLength++ { + if len(sID)%patternLength == 0 { + matches := true + for idx := 0; idx < len(sID)-patternLength; idx++ { + if sID[idx] != sID[idx+patternLength] { + matches = false + break + } + } + if matches { + sum += id + found = true + } + } + } + } + } + } + return sum }