Dijkstra's Algorithm - Computerphile
Why Stack Overflow recommends it
Stack Overflow users link it when they want a step-by-step walkthrough of Dijkstra's algorithm to learn from or to base their own graph code on.
Recommended by 1 people across 1 different months, 2021 to 2023.
What it is
A Computerphile explainer in which Dr Mike Pound walks through Dijkstra's shortest-path algorithm step by step on a small graph. It is about ten minutes long and filmed at the University of Nottingham.
What people said
Recommends Pepijn Kramer · 2023-06 · Stack Overflow · on “When is the shortest path to some vertex found in Dijkstra's algorithm?”
Normally I don't advise to use youtube for learning, but I've seen this video that takes you through the algorithm step by step. computerphile on dijkstra's shortest path algorithm [this video]
Cites Caspian Ahlberg · 2021-01 · Stack Overflow · on “Finding all nodes connected to a vertex in Prolog”
I am curious about pathfinding algorithms, so I took a look at Dijkstra's. I'm using this [this video] video as a guide (and it's what I'm basing my graph on). Here is the graph I am working from: I now want to be able to find all connections of a given vertex. I think that I should use findall for this, which I tried to use in the all_connections goal below. However, with main , my output is [b,b,b,b] . Why is that happening? That makes no sense. If you understand what I am doing wrong please let me know. connection(s, c, 3). connection(c, l, 2). connection(l, i, 4). connection(l, j, 4). connection(i, j, 6). connection(i, k, 4). connection(j, k, 4). connection(k, e, 5). connection(e, g, 2). conn
Cites Kresnik · 2021-11 · Stack Overflow · on “Is there a way of optimizing Dijkstra algorithm other than using A*?”
I need to find the shortest path between 2 points in a Graph This task must be done in C language I chose to use Dijkstra's algorithm to solve this problem. When working with 442 vertexes, I instantly find the path with no problems, however, when working with 6111 and 12605 (teacher's test cases), the algorithm begins to slow down so much at the point that it takes 8 minutes to find one single path. My graph implementation works with adjacent lists to prevent n^2 size. The Dijkstra that I implemented was based in ComputerPhile's video [this video] , using priority queue, with a while(current_vertex != destination && get_size(priority_queue) > 0) , also the priority of each node on the priority qu