GomoryHu< GR, CAP >::MinCutNodeIt Class Reference

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Detailed Description

template<typename GR, typename CAP>
class lemon::GomoryHu< GR, CAP >::MinCutNodeIt

This iterator class lists the nodes of a minimum cut found by GomoryHu. Before using it, you must allocate a GomoryHu class and call its run() method.

This example counts the nodes in the minimum cut separating s from t.

 GomoruHu<Graph> gom(g, capacities);
 gom.run();
 int cnt=0;
 for(GomoruHu<Graph>::MinCutNodeIt n(gom,s,t); n!=INVALID; ++n) ++cnt;

#include <lemon/gomory_hu.h>

List of all members.

Public Member Functions
	MinCutNodeIt (GomoryHu const &gomory, const Node &s, const Node &t, bool side=true)
	operator typename Graph::Node () const
MinCutNodeIt &	operator++ ()
Graph::Node	operator++ (int)
	Postfix incrementation.

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Constructor & Destructor Documentation

MinCutNodeIt	(	GomoryHu const &	gomory,
		const Node &	s,
		const Node &	t,
		bool	side = true
	)		[inline]

Constructor.

Parameters:

gomory	The GomoryHu class. You must call its run() method before initializing this iterator.
s	The base node.
t	The node you want to separate from node s.
side	If it is true (default) then the iterator lists the nodes of the component containing s, otherwise it lists the other component.

Note:

As the minimum cut is not always unique,

 MinCutNodeIt(gomory, s, t, true);

and

 MinCutNodeIt(gomory, t, s, false);

does not necessarily give the same set of nodes. However it is ensured that

 MinCutNodeIt(gomory, s, t, true);

and

 MinCutNodeIt(gomory, s, t, false);

together list each node exactly once.

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Member Function Documentation

operator typename Graph::Node

(

)

const [inline]

Conversion to Node.

MinCutNodeIt& operator++

(

)

[inline]

Next node.

Graph::Node operator++

(

int

)

[inline]

Postfix incrementation.

Warning:

This incrementation returns a Node, not a MinCutNodeIt, as one may expect.