82 releases (31 breaking)
new 0.32.0 | May 2, 2024 |
---|---|
0.30.9 | May 1, 2024 |
0.2.3 | Mar 31, 2024 |
#717 in Data structures
7,712 downloads per month
365KB
10K
SLoC
Graph algorithms, operations, generators, and representations.
Installation
Add the following to your Cargo.toml
:
[dependencies]
graaf = "0.32.0"
To use stable Rust, disable the adjacency_matrix
feature:
[dependencies]
graaf = { version = "0.32.0", default-features = false }
Overview
Operations
Build and query graphs made with standard collections, or implement the operation traits for your own types.
use {
graaf::op::{
AddEdge,
Indegree,
Outdegree,
RemoveEdge,
},
std::collections::BTreeSet,
};
let mut graph = vec![BTreeSet::new(); 3];
// 1 ← 0 → 2
graph.add_edge(0, 1);
graph.add_edge(0, 2);
assert_eq!(graph.outdegree(0), 2);
assert_eq!(graph.indegree(1), 1);
assert_eq!(graph.indegree(2), 1);
graph.remove_edge(0, 1);
assert_eq!(graph.outdegree(0), 1);
assert_eq!(graph.indegree(1), 0);
assert_eq!(graph.indegree(2), 1);
Algorithms
Search, traverse, and analyze graphs built from the types that implement the operation traits.
use graaf::algo::bfs::single_pair_shortest_path as spsp;
let graph = [Vec::new(), vec![0], vec![1], vec![0, 2]];
assert_eq!(spsp(&graph, 3, 0), Some(vec![3, 0]));
assert_eq!(spsp(&graph, 3, 1), Some(vec![3, 2, 1]));
assert_eq!(spsp(&graph, 3, 2), Some(vec![3, 2]));
assert_eq!(spsp(&graph, 0, 3), None);
Representations
Use custom graph representations. An adjacency matrix representation is available with the adjacency_matrix
feature.
use graaf::{
op::{
AddEdge,
IsSimple,
},
repr::AdjacencyMatrix,
};
let mut graph = AdjacencyMatrix::<3>::new();
graph.add_edge(0, 1);
assert!(graph.is_simple());
graph.add_edge(1, 1);
assert!(!graph.is_simple());
Generators
Generate parameterized graphs.
use graaf::gen::Cycle;
let graph = Vec<Vec<usize>>::cycle(5);
assert_eq!(graph, vec![
vec![0, 1],
vec![1, 2],
vec![2, 3],
vec![3, 4],
vec![4, 0],
]);
License
Licensed under either of Apache License, Version 2.0 or MIT license at your option.