first commit

day-01/internal/util/util.go

@@ -0,0 +1,20 @@
+package util
+
+import (
+	"cmp"
+	"slices"
+	"strconv"
+)
+
+func MustConv(s string) int {
+	n, err := strconv.Atoi(s)
+	if err != nil {
+		panic(err)
+	}
+	return n
+}
+
+func InsertSorted[T cmp.Ordered](ts []T, t T) []T {
+	i, _ := slices.BinarySearch(ts, t)
+	return slices.Insert(ts, i, t)
+}