Can dijkstra's algorithm work for graph with negative edges ... - Reddit
May 9, 2024 · Dijkstra's algorithm for finding shortest paths in a weighted graph can be understood as a modified breadth-first search (BFS) algorithm. Imagine transforming the weighted graph by replacing …
Help Me Understand Dijkstra's Algorithm : r/learnprogramming - Reddit
Dec 12, 2012 · Dijkstra's algorithm isn't just for finding the shortest route between to points, it used to find the shortest path throughout the whole graph. Starting from an arbitrary point in the graph, …
Why does Dijkstra algorithm work even when distance is not ... - Reddit
Apr 24, 2022 · How is this possible? Why does dijkstra works even without really using a pq? ** UPDATE, thanks for all the comments guys. Can someone please address my questions below. Is it …
Dijkstra on negative weights : r/algorithms - Reddit
Apr 21, 2020 · The proof of optimality of Dijkstra's algorithm assumes no negative edges whatsoever. The proof fails if you introduce negative edges, as there could be some massively negative edge to …
Dijkstra's Shortest Path Algorithm (Graph) : r/programming - Reddit
Most of the time when you're implementing Dijkstra's algorithm, you'll keep two pieces of information for each node: the shortest total distance from the starting node and the previous node in the path with …
Time complexity of Dijkstra algorithm : r/algorithms - Reddit
Jun 21, 2021 · Time complexity of Dijkstra algorithm have seen in a lot of articles and here also that the time complexity of dijkstra is O (V + ElogV) But shouldn't the time complexity be O (V + ElogE)? …
Dijkstra's algorithm now running in linear time on a 90x90 grid
Apr 9, 2020 · Disclaimer: CS beginner here, so take this with a grain of salt. The time complexity of Dijkstra's shortest path graph processing algorithm is O (E log V) ("linearithmic" or "superlinear" time …
What's an intuitive explanation of Dijkstra's Algorithm? : r ... - Reddit
Nov 20, 2014 · What's an intuitive explanation of Dijkstra's Algorithm? We're currently learning algorithms and correctness of algorithms in my discrete math class, but I can't seem to get my head …
Could someone please explain what is the difference between ... - Reddit
Jun 14, 2015 · The code for BFS, Dijkstra's, and DFS, is identical, save for the data structure used to hold nodes. In BFS, it's a queue. In DFS, it's a stack. In Dijkstra's, it's a priority queue. They all …
Djikstra's algorithm : r/ProgrammerHumor - Reddit
Feb 6, 2017 · Yup, and Dijkstra's algorithm is a special case of A* with a really overly optimistic heuristic (x -> 0). In the case of a 2D road network (which is presumably what separates Dijkstra from bae), A* …