refactor 1461

fishercoder1534 · fishercoder1534 · commit 734cb404274c · 2021-03-12T07:41:24.000-08:00
diff --git a/src/main/java/com/fishercoder/solutions/_1461.java b/src/main/java/com/fishercoder/solutions/_1461.java
@@ -5,6 +5,9 @@
 
 public class _1461 {
     public static class Solution1 {
+        /**
+         * inspired by https://leetcode.com/problems/check-if-a-string-contains-all-binary-codes-of-size-k/discuss/660505/Java-4-lines-solution
+         */
         public boolean hasAllCodes(String s, int k) {
             Set<String> set = new HashSet<>();
             for (int i = 0; i <= s.length() - k; i++) {
