function matrixRotation(matrix, r) {
    // Write your code here
    const rows = matrix.length;
    const cols = matrix[0].length;
    const buffer = new Array((rows + cols - 2) * 2);
    const m_action_walk = (i, s, bs, mx, my) => {
        buffer[(i + s) % bs] = matrix[my][mx];
    };
    const m_action_write = (i, s, bs, mx, my) => {
        matrix[my][mx] = buffer[(i + s) % bs];
    };
    const walk_matrix_around = (x, y, action, s) => {
        let i = 0;
        let bsize = (rows - 2 * x + cols - 2 * y) * 2 - 4;
        for (let row = y; row < rows - y; row++)
            action(i++, s, bsize, x, row);
        for (let col = x + 1; col < cols - x; col++)
            action(i++, s, bsize, col, rows - y - 1);
        for (let row = rows - y - 2; row >= y; row--)
            action(i++, s, bsize, cols - x - 1, row);
        for (let col = cols - x - 2; col > x; col--)
            action(i++, s, bsize, col, y);
    };
    for(let xy = 0; xy < rows - xy && xy < cols - xy; xy++) {
        walk_matrix_around(xy, xy, m_action_walk, r);
        walk_matrix_around(xy, xy, m_action_write, 0);
    }
    for (let row = 0; row < rows; row++) {
        console.log(matrix[row].join(' '));
    }
}