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[leetcode]Reverse Integer @ Python

2014-06-09 13:35 423 查看
原题地址:https://oj.leetcode.com/problems/reverse-integer/

题意:

Reverse digits of an integer.

Example1: x = 123, return 321
Example2: x = -123, return -321

解题思路:翻转整数。

代码:

class Solution:
# @return an integer
def reverse(self, x):
answer = 0
sign = 1 if x > 0 else -1
x = abs(x)
while x > 0:
answer = answer * 10 + x % 10
x /= 10
return sign*answer
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