Greedy algorithm for single source shortest path (dijestra algorithm)
catalogue
1. Description of single source shortest path problem
2.Dijkstra algorithm idea
3. Specific case analysis
4. Specific code implementation
1. Description of single source shortest path problem
① Given weighted digraph G =(V,E). Where V is the set of all vertices in the graph. E is the set of all edges in the graph, and the ...
Posted by caster001 on Tue, 30 Nov 2021 22:49:01 -0800
[collection does not get lost] search and fundamentals of graph theory
catalogue
🌠DFS
🌠BFS
🌠 Breadth first traversal of trees and graphs
→ topological sorting
Example:
🌠 shortest path
👉 Single source shortest path (naive Dijkstra) (there must be no negative weight edge)
→ heap optimization Dijkstra (to be continued...)
👉 Single source shortest path with negative weight edge (Bellm ...
Posted by stringfield on Sun, 31 Oct 2021 10:03:57 -0700
[summary] single source shortest path (naive Dijkstra) and minimum spanning tree (Prim,Kruskal)
catalogue
shortest path
Plain Dijkstra
minimum spanning tree
Prim algorithm
Kruskal algorithm
shortest path
Plain Dijkstra
Time complexity: O(n2+m) , n Represents the number of points, M Represents the number of sides
Dense graph 👉 &nbs ...
Posted by apulmca2k4 on Thu, 28 Oct 2021 09:31:10 -0700