832. Flipping an Image

97.14 %
class Solution {
    public int[][] flipAndInvertImage(int[][] A) {
if (A == null || A.length == 0 || A[0] == null || A[0].length == 0) return A;
int cols = A[0].length;
for (int y = 0; y < A.length; y++) {
int left = 0;
int right = cols - 1;
while (left <= right) {
if (left == right) {
A[y][left] ^= 1;
} else {
int temp = A[y][left] ^ 1;
A[y][left] = A[y][right] ^ 1;
A[y][right] = temp;
}
                left++;
                right--;
}
}
return A;
}
}