reverse integer

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"""
https://leetcode.com/problems/reverse-integer/description/
"""

class Solution(object):
    def reverse(self, x):
        """
        :type x: int
        :rtype: int
        >>> s = Solution()
        >>> s.reverse(123)
        321
        >>> s.reverse(0)
        0
        >>> s.reverse(-123)
        -321
        >>> s.reverse(2**31)
        0
        >>> s.reverse(1563847412)
        0
        """
        if x == 0:
            return x
        if x < 0:
            sig = -1
        else:
            sig = 1
        s = int((str(abs(x))[::-1]))
        if sig < 0:
            if s > 2**31:
                return 0
        else:
            if s > 2**31 - 1:
                return 0
        if sig == -1:
            s = -s
        return s


def test():
    s = Solution()
    s.reverse(123)
    s.reverse(0)
    s.reverse(-123)
    s.reverse(2**31)
    s.reverse(1563847412)


if __name__ == '__main__':
	import timeit
	print(timeit.timeit("test()", number=100000, setup="from __main__ import test"))