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 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.
class Solution:
def reverse(self, x):
"""
:type x: int
:rtype: int
"""
s = str(x)
if s[0] == "-":
r = "-" + s[1:][::-1]
else:
r = s[::-1]
r = int(r)
if r > 2**31 or r < -(2**31):
r = 0
return r
