¬ just serendipity 🍀 (not just serendipity)

class Solution:
    def generatePossibleNextMoves(self, currentState: str) -> List[str]:
        s = currentState

        ans = []

        for i in range(len(s) - 1):
            j = i + 1

            if s[i] == s[j] == '+':
                ans.append(s[:i] + '--' + s[j + 1:])

        return ans