Reverse Integer

Reverse Integer

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

Note:

Assume we are dealing with an environment which could only hold integers within the 32-bit signed integer range. For the purpose of this problem, assume that your function returns 0 when the reversed integer overflows.

mycode:

class Solution:

    def reverse(self, x):

        """

        :type x: int

        :rtype: int

        """

        n = int(str(abs(x))[::-1])

        if x>=0:

            return n if n.bit_length() < 32 else 0

        else:

            return -n if n.bit_length() < 32 else 0

others:

def reverse(self, x):

s = cmp(x, 0)

r = int(`s*x`[::-1])

return s*r * (r < 2**31)

def reverse(self, x):

n = cmp(x, 0) * int(str(abs(x))[::-1])

return n if n.bit_length() < 32 else 0