LeetCode - Algorithms - 832. Flipping an Image

Problem

832. Flipping an Image

similar question : 48. Rotate Image

Java

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class Solution {
    public int[][] flipAndInvertImage(int[][] A) {
        final int N = A.length;
        final int M = A[0].length;
        int tmp;
        for(int i=0; i<N; i++) {
            for(int j=0; j<M/2; j++) {
                tmp = A[i][j];
                A[i][j] = A[i][N-1-j];
                A[i][N-1-j] = tmp;
            }
        }
        for(int i=0; i<N; i++) {
            for(int j=0; j<M; j++) {
                A[i][j] = A[i][j]==0?1:0;
            }
        }
        return A;
    }
}

Submission Detail

  • 82 / 82 test cases passed.
  • Runtime: 0 ms, faster than 100.00% of Java online submissions for Flipping an Image.
  • Memory Usage: 39.1 MB, less than 16.27% of Java online submissions for Flipping an Image.