Merge pull request gzc426#189 from zyzhuaidan/master

gzc426 · web-flow · commit 1050270901be · 2018-12-01T10:28:57.000+08:00
1
diff --git a/2018.11.27-leetcode125/tongLuoWan.md b/2018.11.27-leetcode125/tongLuoWan.md
@@ -0,0 +1,24 @@
+>leetcode 125. Valid Palindrome
+
+```
+class Solution {
+
+    public boolean isPalindrome(String s) {
+        if(s.length()==0)
+    		return true;
+        s=s.toLowerCase();
+        int i = 0, j = s.length()- 1;
+        while (i<j){
+            if(!Character.isLetterOrDigit(s.charAt(i))) 
+                i++;
+            else if(!Character.isLetterOrDigit(s.charAt(j))) 
+                j--;
+            else if(s.charAt(i) != s.charAt(j)) 
+                return false;
+            else{ i++;j--;}
+        }
+        return true;        
+    }
+}
+```
+>2018.11.27号打卡
