0073. Set Matrix Zeros #

class Solution {
    public void setZeroes(int[][] matrix) {
        boolean makeFirstRowZero = false, makeFirstColZero = false;
        for (int j = 0; j < matrix[0].length; j++) if (matrix[0][j] == 0) makeFirstRowZero = true;
        for (int i = 0; i < matrix.length; i++) if (matrix[i][0] == 0) makeFirstColZero = true;
        for (int i = 1; i < matrix.length; i++) {
            for (int j = 1; j < matrix[0].length; j++) {
                if (matrix[i][j] == 0) {
                    matrix[i][0] = matrix[0][j] = 0;
                }
            }
        }
        for (int i = 1; i < matrix.length; i++) {
            if (matrix[i][0] == 0) {
                for (int j = 1; j < matrix[0].length; j++) {
                    matrix[i][j] = 0;
                }
            }
        }
        for (int j = 1; j < matrix[0].length; j++) {
            if (matrix[0][j] == 0) {
                for (int i = 1; i < matrix.length; i++) {
                    matrix[i][j] = 0;
                }
            }
        }
        if (makeFirstRowZero) for (int j = 0; j < matrix[0].length; j++) matrix[0][j] = 0;
        if (makeFirstColZero) for (int i = 0; i < matrix.length; i++) matrix[i][0] = 0;
    }
}