【Leetcode】【Python】9. Palindrome Number实现

题目：

Determine whether an integer is a palindrome. Do this without extra space.

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思路：

将数字转化为字符串，头尾相互开始比较，直到结束或者匹配不成功。

实现：

class Solution(object):
    def isPalindrome(self, x):
        """
        :type x: int
        :rtype: bool
        """
        if x<0:
            return False
        x=str(x)
        for i in range(len(x)//2):
            if x[i]!=x[len(x)-i+1]:
                return False
        return True