Dijkstra s algorithm, named after its discoverer, Dutch computer scientist Edsger Dijkstra, is a greedy algorithm that solves the single-source shortest path problem for a directed graph with non negative edge weights. For example, if the vertices (nodes) of the graph represent cities and edge weights represent driving distances between pairs of cities connected by a direct road, Dijkstra s algorithm can be used to find the shortest route between two cities. Also, this algorithm can be used for shortest path to destination in traffic network.