1. Description: 

Notes:

2. Examples:

3.Solutions:

 1 /**
 2  * Created by sheepcore on 2019-02-24
 3  */
 4 class Solution {
 5     public int[][] flipAndInvertImage(int[][] A) {
 6      for (int i = 0; i < A.length; i++)
 7             for (int j = 0; j < A[0].length / 2; j++) { //flip each row and revert the image simultaneously.
 8                 int temp = A[i][j] ^ 1;
 9                 A[i][j] = A[i][A[0].length - j - 1] ^ 1;
10                 A[i][A[0].length - j - 1] = temp;
11             }
12         if (A.length % 2 != 0) //revert the median of each row if the size of the given matrix is odd.
13             for (int i = 0; i < A.length; i++)
14                 A[i][A.length / 2] ^= 1;
15         return A;
16     }
17 }