python
左旋转字符串
http://www.nowcoder.com/questionTerminal/12d959b108cb42b1ab72cef4d36af5ec
# -*- coding:utf-8 -*-
class Solution:
def LeftRotateString(self, s, n):
# write code here
if s=="" or n>len(s):return ""
return s[n:]+s[:n]
