class Solution:
    def decode(self, encoded: List[int], first: int) -> List[int]:
        thisNum = first
        for i in range(len(encoded)):
            nextNum = encoded[i]^thisNum
            encoded[i] = thisNum
            thisNum = nextNum
        encoded.append(nextNum)
        return encoded

位运算 简单 每日一题

https://leetcode-cn.com/problems/decode-xored-array/