796. Rotate String

Easy

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.

😇 Solution

O(s)

class Solution:
    def rotateString(self, A: str, B: str) -> bool:
        
        if not A and not B:
            return True
        
        for i in range(1,len(A)):
            temp = A[i:] + A[:i]
            if temp == B:
                return True
        
        return False