11. Spiral Matrix

function solve(n) {
  const total = n * n;
  const result = [];

  for (let i = 0; i < n; i++) {
    const rs = [];
    for (let j = 0; j < n; j++) {
      rs.push(0);
    }
    result.push(rs);
  }

  let x = 0;
  let y = 0;
  let step = 0;
  for (let i = 0; i < total;) {
    while (y + step < n) {
      i++;
      result[x][y] = i;
      y++;
    }
    y--;
    x++;

    while (x + step < n) {
      i++;
      result[x][y] = i;
      x++;
    }
    x--;
    y--;

    while (y >= step) {
      i++;
      result[x][y] = i;
      y--;
    }
    y++;
    x--;
    step++;

    while (x >= step) {
      i++;
      result[x][y] = i;
      x--;
    }
    x++;
    y++;
  }
  result.forEach((row) => console.log(row.join(' ')));
}