困難度:Easy

題目: x為整數，如果x前後都是一的數字就為Ture，反之為False。

Given an integer x, return true if x is palindrome integer.

An integer is a palindrome when it reads the same backward as forward. For example, 121 is palindrome while 123 is not.

Example 1:

Input: x = 121

Output: true

Example 2:

Input: x = -121

Output: false

Explanation: From left to right, it reads -121. From right to left, it becomes 121-. Therefore it is not a palindrome.

Example 3:

Input: x = 10

Output: false

Explanation: Reads 01 from right to left. Therefore it is not a palindrome.

Example 4:

Input: x = -101

Output: false

Python解題筆記

Inline code has back-ticks around it.

class Solution:
    def isPalindrome(self, x):
        if x < 0: return False
        x = str(x)
        return x == x[::-1]

題目原處-LeetCode