Function isZero

javascript/0073-set-matrix-zeroes.js:106–110

(matrix, row, col)

};

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

    return rowLeftEdge === 0 || colTopEdge === 0;
};

/**
 * Constant Space