# LeetCode - 0832. Flipping an Image
### 題目網址：https://leetcode.com/problems/flipping-an-image/
###### tags: `LeetCode` `Easy` `陣列` `模擬`

/*
    -LeetCode format-
    Problem: 832. Flipping an Image
    Difficulty: Easy
    
    by Inversionpeter
*/



class Solution {
public:
    vector<vector<int>> flipAndInvertImage(vector<vector<int>>& A) {
        int width = A[0].size(), half = width >> 1;
        for (int i = 0; i != A.size(); ++i) {
            for (int j = 0; j < half; ++j) {
                A[i][j] = !A[i][j];
                A[i][width - j - 1] = !A[i][width - j - 1];
                swap(A[i][j], A[i][width - j - 1]);
            }
            if (width & 1)
                A[i][half] = !A[i][half];
        }
        return A;
    }
};