Compact adjacency matrix.
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> Compact adjacency matrix constructor.
``bash`
npm install @stdlib/dstructs-compact-adjacency-matrix
`javascript`
var CompactAdjacencyMatrix = require( '@stdlib/dstructs-compact-adjacency-matrix' );
#### CompactAdjacencyMatrix( N )
Returns a compact adjacency matrix instance.
`javascript
var adj = new CompactAdjacencyMatrix( 4 );
// returns
// ...
adj.addEdge( 0, 1 );
adj.addEdge( 0, 2 );
adj.addEdge( 1, 2 );
adj.addEdge( 2, 3 );
`
`javascript
var CompactAdjacencyMatrix = require( '@stdlib/dstructs-compact-adjacency-matrix' );
// Create a new adjacency matrix:
var adj = new CompactAdjacencyMatrix( 4 );
// Add edges:
adj.addEdge( 1, 0 );
adj.addEdge( 1, 2 );
adj.addEdge( 0, 2 );
adj.addEdge( 2, 3 );
// Compute the indegrees and outdegrees for each vertex:
var id;
var od;
var i;
for ( i = 0; i < 4; i++ ) {
id = adj.inDegree( i );
od = adj.outDegree( i );
console.log( 'vertex: %d. indegree: %d. outdegree: %d.', i, id, od );
}
// Print the list of all edges:
console.log( adj.edges );
// => [ [ 0, 2 ], [ 1, 0 ], [ 1, 2 ], [ 2, 3 ] ]
// Convert the adjacency matrix to an adjacency list representation:
console.log( adj.toAdjacencyList() );
// => [ [ 2 ], [ 0, 2 ], [ 3 ], [] ]
// Compute a topological ordering:
console.log( adj.toposort() );
// => [ [ 1, 0, 2, 3 ], null ]
`
*
This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].
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---
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