2025-08-26 05:16:39 +0000 UTC

class Solution:
    def reverse(self, x: int) -> int:
        digits = []
        neg = 1
        if x < 0:
            neg = -1
            x = -x
        while x > 0:
            digits.append(x % 10)
            x //= 10
        cnt, res = 0, 0
        while digits:
            res += digits.pop() * (10 ** cnt)
            cnt += 1
            if res > 2 ** 31:
                return 0
        return res * neg