Split RepeatFive, handle counts, add examples

iteration/iteration.go

@@ -2,11 +2,18 @@ package iteration
 
 import "strings"
 
-const repeatCount = 5
+const defaultRepeatCount = 5
 
-func Repeat(character string) string {
+func RepeatFive(character string) string {
+	return Repeat(character, defaultRepeatCount)
+}
+
+func Repeat(character string, count int) string {
+	if count == 0 {
+		count = defaultRepeatCount
+	}
 	var repeated strings.Builder
-	for range repeatCount {
+	for range count {
 		repeated.WriteString(character)
 	}