FullGraph Class Reference

Detailed Description

FullGraph is a simple and fast implmenetation of undirected full (complete) graphs. It contains an edge between every distinct pair of nodes, therefore the number of edges is n(n-1)/2. This class is completely static and it needs constant memory space. Thus you can neither add nor delete nodes or edges, however the structure can be resized using resize().

This type fully conforms to the Graph concept. Most of its member functions and nested classes are documented only in the concept class.

This class provides constant time counting for nodes, edges and arcs.

Note

FullDigraph and FullGraph classes are very similar, but there are two differences. While FullDigraph conforms only to the Digraph concept, this class conforms to the Graph concept, moreover this class does not contain a loop for each node as FullDigraph does.

See Also

FullDigraph

#include <lemon/full_graph.h>

Inherits GraphExtender< Base >.

Public Member Functions
	FullGraph ()
	Default constructor.
	FullGraph (int n)
	Constructor.
void	resize (int n)
	Resizes the graph.
Node	operator() (int ix) const
	Returns the node with the given index.
Arc	arc (Node s, Node t) const
Edge	edge (Node u, Node v) const
int	nodeNum () const
	Number of nodes.
int	arcNum () const
	Number of arcs.
int	edgeNum () const
	Number of edges.

Static Public Member Functions
static int	index (const Node &node)
	Returns the index of the given node.

Constructor & Destructor Documentation

FullGraph ( )

inline

Default constructor. The number of nodes and edges will be zero.

FullGraph ( int  n )

inline

Constructor.

Parameters

n	The number of the nodes.

Member Function Documentation

void resize ( int  n )

inline

This function resizes the graph. It fully destroys and rebuilds the structure, therefore the maps of the graph will be reallocated automatically and the previous values will be lost.

Node operator() ( int  ix ) const

inline

Returns the node with the given index. Since this structure is completely static, the nodes can be indexed with integers from the range [0..nodeNum()-1]. The index of a node is the same as its ID.

See Also

index()

static int index ( const Node &  node )

inlinestatic

Returns the index of the given node. Since this structure is completely static, the nodes can be indexed with integers from the range [0..nodeNum()-1]. The index of a node is the same as its ID.

See Also

operator()()

Arc arc ( Node  s, Node  t  ) const

inline

Returns the arc connecting the given nodes.

Edge edge ( Node  u, Node  v  ) const

inline

Returns the edge connecting the given nodes.