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8 months ago
'''
给出一个有符号正整数你需要将这个整数中每位上的数字进行反转
示例 1: 输入: 123 输出: 321
示例 2: 输入: 714 输出: 417
示例 3: 输入: 120 输出: 21
'''
class Solution(object):
def reverse(self,x):
"""
:type x: int
:rtype: int
"""
ans = 0
while x:
ans = ans*10 + x%10 # 不断取x/10的余数
x //= 10
if x < 1: break
return ans
print ( Solution().reverse( 123 ) )