Function setCellsToZero

javascript/0073-set-matrix-zeroes.js:90–104

(matrix, isColZero)

};

var setCellsToZero = (matrix, isColZero) => {
    const [rows, cols] = [matrix.length, matrix[0].length];

    for (let row = rows - 1; 0 <= row; row--) {
        /* Time (ROWS) */
        for (let col = cols - 1; 1 <= col; col--) {
            /* Time (COLS) */
            if (!isZero(matrix, row, col)) continue;

            matrix[row][col] = 0;
        }

        if (isColZero) matrix[row][0] = 0;
    }
};

var isZero = (matrix, row, col) => {
    const [rowLeftEdge, colTopEdge] = [matrix[row][0], matrix[0][col]];