首页 > itarticle > 7. reverse integer

7. reverse integer

admin 1月 30, 2021 0

Description

Difficulty: Easy

Reverse digits of an integer.

Example1: x = 123, return 321
Example2: x = -123, return -321

Note:
The input is assumed to be a 32-bit signed integer. Your function should return 0 when the reversed integer overflows.

Solution

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