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.class Solution(object):
def rotateString(self, A, B):
"""
:type A: str
:type B: str
:rtype: bool
"""
if A and B:
if len(A)!=len(B):
return False
for i in range(len(A)):
if A[i+1:]+A[:i+1]==B:
return True
return False
if A and B=="":
return False
if A=="" and B:
return False
return True
[LeetCode&Python] Problem 796. Rotate String
原文：https://www.cnblogs.com/chiyeung/p/10016022.html