leetcode

0 class Solution {

1 public:

2 vector<int> decode(const vector<int> &encoded, int first) const {

3 const int n = size(encoded);

4 vector<int> res(n + 1);

5

6 res[0] = first;

7 for (int i = 0; i < size(encoded); i++) {

8 res[i + 1] = encoded[i] ^ res[i];

9 }

10

11 return res;

12 }

13 };