Spiral Matrix

Ringkasan Tantangan

Given the size, return a square matrix of numbers in spiral order.

Visit the spiral-matrix exercise on Exercism to read the full instructions and download the exercise files.

Community Solutions

Lihat Solusi Komunitas

The following are the top 1 community solutions by stars:

Solution 1 by @keiraville (⭐ 0) — View on Exercism

Source: Exercism sml/spiral-matrix

💡 Lihat Solusi

fun spiralMatrix (size: int): int list list =
  let
      fun spiralCoords (n, offset) =
        if n <= 0 then []
        else if n = 1 then [(offset, offset)]
        else
          List.tabulate (n - 1, fn c => (offset, offset + c))
          @ List.tabulate (n - 1, fn r => (offset + r, offset + n - 1))
          @ List.tabulate (n - 1, fn c => (offset + n - 1, offset + n - 1 - c))
          @ List.tabulate (n - 1, fn r => (offset + n - 1 - r, offset))