Leetcode: Reverse Integer
Feb 27, 2021
Given a signed 32-bit integer x
, return x
with its digits reversed. If reversing x
causes the value to go outside the signed 32-bit integer range [-231, 231 - 1]
, then return 0
.
Assume the environment does not allow you to store 64-bit integers (signed or unsigned).
Example 1:
Input: x = 123
Output: 321
Example 2:
Input: x = -123
Output: -321
Program:
class Solution(object):
def reverse(self, x):
flag = 0
list1 =[]
if x < 0:
flag = 1
list1[:0]= str(abs(x))
result = int("".join(list1[::-1]))
if flag == 1:
result = result * -1
if result > 2**31 - 1 or result <= -2**31:
return 0
else:
return(result)