0796._Rotate_String.md

796. Rotate String

难度: Easy

刷题内容

原题连接

• https://leetcode.com/problems/rotate-string/description/

内容描述

We are given two strings, A and B.

A shift on A consists of taking string A and moving the leftmost character to the rightmost position. For example, if A = 'abcde', then it will be 'bcdea' after one shift on A. Return True if and only if A can become B after some number of shifts on A.

Example 1:
Input: A = 'abcde', B = 'cdeab'
Output: true

Example 2:
Input: A = 'abcde', B = 'abced'
Output: false
Note:

A and B will have length at most 100.

解题方案

思路 1

一行就够了，太简单了

class Solution(object):
    def rotateString(self, A, B):
        """
        :type A: str
        :type B: str
        :rtype: bool
        """
        return len(A) == len(B) and B in A * 2