2023 Day 9 Complete!

helpers/helpers.go

@@ -153,12 +153,12 @@ func Atof(i string) float64 {
 	return ret
 }
 
-// Atoi goes through i and removes and characters that aren't numeric
+// Atoi goes through i and removes and characters that aren't numeric (or -)
 // Then runs it through the normal Atoi
 func Atoi(i string) int {
 	var wrk string
 	for _, bt := range i {
-		if bt >= '0' && bt <= '9' {
+		if bt == '-' || (bt >= '0' && bt <= '9') {
 			wrk = fmt.Sprintf("%s%s", wrk, string(bt))
 		}
 	}