solver for spare matrix

我业余时间编写的一些基础算法，适合面试前阅读。-I have spare time to prepare some of the basic algorithm, suitable for reading before the interview.

Spare texture representation using local keypoints

刚好手头的项目需要为客户提供一个路线指引功能的小模块，需要自动计算图形上两点间的最短路径。工作之余想着这个算法还是比较的常用，就总结了一下，与大家共享。-Just the project at hand to provide customers with a route guidance function module to automatically calculate the shortest path between two points on the graph. Spare time