exercism-rust/spiral-matrix

Spiral Matrix

Welcome to Spiral Matrix on Exercism's Rust Track. If you need help running the tests or submitting your code, check out HELP.md.

Instructions

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

The matrix should be filled with natural numbers, starting from 1 in the top-left corner, increasing in an inward, clockwise spiral order, like these examples:

Examples

Spiral matrix of size 3

1 2 3
8 9 4
7 6 5

Spiral matrix of size 4

 1  2  3 4
12 13 14 5
11 16 15 6
10  9  8 7

Source

Created by

• @Menkir

Contributed to by

• @coriolinus
• @cwhakes
• @efx
• @ErikSchierboom
• @lutostag
• @petertseng
• @rofrol
• @stringparser
• @xakon
• @ZapAnton

Based on

Reddit r/dailyprogrammer challenge #320 [Easy] Spiral Ascension. - https://www.reddit.com/r/dailyprogrammer/comments/6i60lr/20170619_challenge_320_easy_spiral_ascension/