There are many algorithms that can be applied to graphs. Many of these are actually used in the real world, such as Dijkstra’s algorithm to find shortest paths. We will discuss a few here.-有很多算法，可用于图形。其中许多是实际使用在现实世界中， 如迪杰斯特拉算法寻找最短路径。将在这里讨论几个算法。