009_Palindrome_Number Python 3 Support (qiyuangong#26)

* Upgrade 009_Palindrome_Number.py for Python 3 support, by @peterhuang1kimo

Author: peterhuang1kimo

python/009_Palindrome_Number.py

@@ -9,23 +9,17 @@ class Solution(object):
     def isPalindrome(self, x):
         if x < 0:
             return False
-        ls = 0
+        ls = len(str(x))
         tmp = x
-        while tmp != 0:
-            ls += 1
-            tmp = tmp // 10
-        tmp = x
-        for i in range(ls/2):
-            right = tmp % 10
+        for i in range(int(ls/2)):
+            right = int(tmp % 10)
             left = tmp / (10 ** (ls - 2 * i - 1))
-            left = left % 10
-            # print left, right
+            left = int(left % 10)
             if left != right:
                 return False
             tmp = tmp // 10
         return True
 
-
     # def isPalindrome(self, x):
     #     #leetcode book
     #     if x < 0:
@@ -62,4 +56,4 @@ def isPalindrome(self, x):
 if __name__ == '__main__':
     # begin
     s = Solution()
-    print s.isPalindrome(1001)
+    print s.isPalindrome(1001)