def isPalindrome(self, x):
    """
    :type x: int
    :rtype: bool
    """
    #思路：先将整数转换为字符串，再将字符串翻转并与原字符串做比较
    x = str(x)
    return x == x[::-1]

def isPalindrome(self, x):
    """
    :type x: int
    :rtype: bool
    """
    #思路二：将数字转换成数组
    #负数肯定不是回文数
    if x < 0 :
      return False
    elif x <= 9:
      return True
    else:
      nums = []
      while x >= 10 :
        mod = x % 10
        nums.append(mod)
        x = x/10
      nums.append(x)
      print "nums:",nums
      for i in range(0,len(nums)/2):
        if nums[i] != nums[-1-i]:
          return False
      return True