有许多是考研要用的！三路归并算法，快速排序的非递归算法，无向连通图的非递归的深度优先遍历等，，希望大家用得着-many are taking tests to use! Three road merging algorithm, rapid sequencing of non - recursive algorithm, undirected graph of the non - recursive depth-first traversal, and we hope that it needs