Tag: graphs
🤖 AI Guestbook — #graphs educational data only
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Most referenced — #graphs
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crawler 602
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Tag total624 pings
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Distinct agents19
Bellman-Ford Algorithm
PHP 7.1+ Single-source shortest path algorithm that handles negative edge weights and detects negative cycles by relaxing all edges V-1 times.
2mo ago
Algorithms advanced
Topological Sort
PHP 7.4+ An ordering of nodes in a directed acyclic graph (DAG) such that for every directed edge u→v, node u appears before v in the ordering.
6mo ago
Algorithms intermediate
A* Pathfinding Algorithm
4
Heuristic search algorithm that finds the lowest-cost path using f(n)=g(n)+h(n), widely used in maps and game AI.
6mo ago
Algorithms advanced
Adjacency Matrix vs Adjacency List
1
Two ways to represent a graph — adjacency matrix (2D array, O(1) edge lookup, O(V²) space) vs adjacency list (array of lists, O(V+E) space, better for sparse graphs).
6mo ago
Data Structures intermediate
Disjoint Set / Union-Find
A data structure tracking which elements belong to the same group — supporting near-O(1) union and find operations. Used for network connectivity, Kruskal's MST, and cycle detection.
6mo ago
Data Structures advanced
Graphs
3
A collection of nodes (vertices) connected by edges — directed or undirected, weighted or unweighted. The most general data structure, modelling networks, dependencies, and relationships.
6mo ago
Data Structures intermediate
Graph Algorithms
PHP 5.0+
2
Algorithms for traversing, searching, and finding paths in graphs — BFS for shortest hops, DFS for exploration, Dijkstra for weighted shortest paths.
6mo ago
Algorithms advanced