1328_Break_a_Palindrome.py

class Solution:
    def breakPalindrome(self, palindrome: str) -> str:
        n = len(palindrome) 
        if n == 1: return ""
       
        for i in range(n//2): 
            if palindrome [i] != 'a':
                return palindrome[:i] + 'a' + palindrome[i+1:]
              
        return palindrome[:n-1] + 'b'