48 lines
873 B
Go
48 lines
873 B
Go
package daytwo
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import (
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"advent-of-code/internal/registry"
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"os"
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"strconv"
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"strings"
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)
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func init() {
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registry.Register("2025D2", ParseInput, PartOne, PartTwo)
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}
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func isInvalidID(id int) bool {
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sID := strconv.Itoa(id)
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if len(sID)%2 != 0 {
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return false
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}
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half := len(sID) / 2
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return sID[:half] == sID[half:]
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}
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func ParseInput(filepath string) []string {
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content, _ := os.ReadFile(filepath)
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return strings.Split(strings.TrimSpace(string(content)), "\n")
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}
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func PartOne(input []string) int {
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sum := 0
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for _, line := range input {
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for newRange := range strings.SplitSeq(line, ",") {
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parts := strings.Split(newRange, "-")
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start, _ := strconv.Atoi(parts[0])
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end, _ := strconv.Atoi(parts[1])
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for id := start; id <= end; id++ {
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if isInvalidID(id) {
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sum += id
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}
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}
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}
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}
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return sum
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}
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func PartTwo(input []string) int {
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return 0
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}
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