Aug 26, 2009 · Dijkstra's algorithm is definitely complete and optimal that you will always find the shortest path. However it tends to take longer since it is used mainly to detect multiple goal nodes.

May 18, 2010 · I understand what Dijkstra's algorithm is, but I don't understand why it works. When selecting the next vertex to examine, why does Dijkstra's algorithm select the one with the smallest …

Variants of Dijkstra's Algorithm The key is there are 3 kinds of implementation of Dijkstra's algorithm, but all the answers under this question ignore the differences among these variants. Using a nested for …

Jun 27, 2016 · As per my understanding, I have calculated time complexity of Dijkstra Algorithm as big-O notation using adjacency list given below. It didn't come out as it was supposed to and that led me to …

Oct 23, 2012 · It says A* is faster than using dijkstra and uses best-first-search to speed things up. A* is basically an informed variation of Dijkstra. A* is considered a "best first search" because it greedily …

Dijkstra's algorithm runs on positive weighed graphs, otherwise the priority queue would be useless. In your example, Dijkstra's algorithm would work because the graph is both weighed (positively) and …

Apr 7, 2014 · I am trying to implement Dijkstra's algorithm in python using arrays. This is my implementation.

Apr 17, 2010 · I was trying to understand this implementation in C of the Dijkstra algorithm and at the same time modify it so that only the shortest path between 2 specific nodes (source and destination) …

May 3, 2017 · Dijkstra and BFS, both are the same algorithm. As said by others members, Dijkstra using priority_queue whereas BFS using a queue. The difference is because of the way the shortest path …

76 After a lot of Googling, I've found that most sources say that the Dijkstra algorithm is "more efficient" than the Bellman-Ford algorithm. But under what circumstances is the Bellman-Ford algorithm better …