fix in string comparator [-1,0,1] only returns

README.md

@@ -357,7 +357,13 @@ func StringComparator(a, b interface{}) int {
 	if diff == 0 {
 		diff = len(s1) - len(s2)
 	}
-	return diff
+	if diff < 0 {
+		return -1
+	}
+	if diff > 0 {
+		return 1
+	}
+	return 0
 }
 ```
 

utils/comparator.go

@@ -36,5 +36,11 @@ func StringComparator(a, b interface{}) int {
 	if diff == 0 {
 		diff = len(s1) - len(s2)
 	}
-	return diff
+	if diff < 0 {
+		return -1
+	}
+	if diff > 0 {
+		return 1
+	}
+	return 0
 }

utils/comparator_test.go

@@ -37,6 +37,7 @@ func TestStringComparator(t *testing.T) {
 		{"", "", 0},
 		{"a", "", 1},
 		{"", "a", -1},
+		{"", "aaaaaaa", -1},
 	}
 
 	for _, test := range tests {