旋转字符串

1、问题描述
给定一个字符串（以字符数组的形式）和一个偏移量，根据偏移量原地从左向右旋转字符串
2、问题示例
输入str=“abcdefg”，offset=3,输出"efgabcd"
输入str=“abcdefg”，offset=1,输出"gabcdef"
3、代码实现

class Solution:
    def rotateString(self, s, offset):
        if len(s) > 0:
            offset = offset % len(s)
            temp = (s + s)[len(s) - offset : 2 * len(s) - offset]
            for i in range(len(temp)):
                s[i] = temp[i]

if __name__ == '__main__':
    s = ['a','b','c','d','e','f','g']
    offset = 3
    solution = Solution()
    solution.rotateString(s,offset)
    print(s)