关于[ Array-less Numerical Spiral Pattern]的摘要:
How to generate a spiral numerical pattern without using arrays. The program comes from this question in the QA: Make pattern program in C#. While the straightforward (and intuitive) solution uses an array to keep track of filled positions, the one presented here is array-less, achieving O(1), instead of O(N^2) space complexity. The program source is already available on the linked page, here I am going to show the 'train of thought' leading to the algorithm.
原文地址: https://www.codeproject.com/Tips/1267580/Array-less-Numerical-Spiral-Pattern