graphs and other algorithms in this we are going to talk about graphs this is concept that comes from the branch of mathematics called graph theory graphs are used to solve number of computing problems they also have much less structure than other data structures we have looked at and things like traversal can be much more unconventionalas we shall see by the end of this you should be able to do the followingunderstand what graphs are know the types of graphs and their constituents know how to represent graph and traverse it get fundamental idea of what priority queues are be able to implement priority queue be able to determine the ith smallest element in list graphs graph is set of vertices and edges that form connections between the vertices in more formal approacha graph is an ordered pair of set of vertices and set of edges given as (vein formal mathematical notation