leetcode q7

記錄用python撰寫leetcode過程

題目:
Given a 32-bit signed integer, reverse digits of an integer.

Example 1:

Input: 123
Output: 321

Example 2:

Input: -123
Output: -321

Example 3:

Input: 120
Output: 21

Note:
Assume we are dealing with an environment which could only store integers within the 32-bit signed integer range: [−231, 231 − 1]. For the purpose of this problem, assume that your function returns 0 when the reversed integer overflows.

44ms

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class (object):
    def reverse(self, x):
        """
        :type x: int
        :rtype: int
        """
        if x < 0:
            tmp = str(x)[1::]
            tmp = tmp[::-1]
            result = int(tmp)*(-1)
        else:
            result = int(str(x)[::-1])
        
        if result>2147483647 or result<-2147483648:
            return 0
        else:
            return result