剑指Offer，字符串的排列

zebinh · zebinh · commit 333fa71c63ec · 2020-01-07T20:43:13.000+08:00
diff --git a/swordoffer/PermutationSolution.java b/swordoffer/PermutationSolution.java
@@ -1,8 +1,9 @@
 /**
- * 剑指Offer，字符串的排列
+ * ��ָOffer���ַ���������
  */
 
 import java.util.ArrayList;
+import java.util.Collections;
 public class PermutationSolution {
 
     public static void main(String[] args) {
@@ -20,7 +21,9 @@ public static ArrayList<String> Permutation(String str) {
         r = new ArrayList<>();
         StringBuilder sb = new StringBuilder(str);
         perm(sb, 0);
+        Collections.sort(r);
         return r;
+        
     }
 
     public static void perm(StringBuilder sb, int start){
