1 | /* -*- C++ -*- |
---|
2 | * |
---|
3 | * This file is a part of LEMON, a generic C++ optimization library |
---|
4 | * |
---|
5 | * Copyright (C) 2003-2006 |
---|
6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
---|
7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
---|
8 | * |
---|
9 | * Permission to use, modify and distribute this software is granted |
---|
10 | * provided that this copyright notice appears in all copies. For |
---|
11 | * precise terms see the accompanying LICENSE file. |
---|
12 | * |
---|
13 | * This software is provided "AS IS" with no warranty of any kind, |
---|
14 | * express or implied, and with no claim as to its suitability for any |
---|
15 | * purpose. |
---|
16 | * |
---|
17 | */ |
---|
18 | |
---|
19 | #ifndef LEMON_FULL_GRAPH_H |
---|
20 | #define LEMON_FULL_GRAPH_H |
---|
21 | |
---|
22 | #include <cmath> |
---|
23 | |
---|
24 | #include <lemon/bits/base_extender.h> |
---|
25 | #include <lemon/bits/graph_extender.h> |
---|
26 | |
---|
27 | #include <lemon/bits/invalid.h> |
---|
28 | #include <lemon/bits/utility.h> |
---|
29 | |
---|
30 | |
---|
31 | ///\ingroup graphs |
---|
32 | ///\file |
---|
33 | ///\brief FullGraph and FullUGraph classes. |
---|
34 | |
---|
35 | |
---|
36 | namespace lemon { |
---|
37 | |
---|
38 | /// \brief Base of the FullGrpah. |
---|
39 | /// |
---|
40 | /// Base of the FullGrpah. |
---|
41 | class FullGraphBase { |
---|
42 | int _nodeNum; |
---|
43 | int _edgeNum; |
---|
44 | public: |
---|
45 | |
---|
46 | typedef FullGraphBase Graph; |
---|
47 | |
---|
48 | class Node; |
---|
49 | class Edge; |
---|
50 | |
---|
51 | public: |
---|
52 | |
---|
53 | FullGraphBase() {} |
---|
54 | |
---|
55 | |
---|
56 | ///Creates a full graph with \c n nodes. |
---|
57 | void construct(int n) { _nodeNum = n; _edgeNum = n * n; } |
---|
58 | |
---|
59 | typedef True NodeNumTag; |
---|
60 | typedef True EdgeNumTag; |
---|
61 | |
---|
62 | /// \brief Returns the node with the given index. |
---|
63 | /// |
---|
64 | /// Returns the node with the given index. Because it is a |
---|
65 | /// static size graph the node's of the graph can be indiced |
---|
66 | /// by the range from 0 to \e nodeNum()-1 and the index of |
---|
67 | /// the node can accessed by the \e index() member. |
---|
68 | Node operator()(int index) const { return Node(index); } |
---|
69 | |
---|
70 | /// \brief Returns the index of the node. |
---|
71 | /// |
---|
72 | /// Returns the index of the node. Because it is a |
---|
73 | /// static size graph the node's of the graph can be indiced |
---|
74 | /// by the range from 0 to \e nodeNum()-1 and the index of |
---|
75 | /// the node can accessed by the \e index() member. |
---|
76 | int index(const Node& node) const { return node.id; } |
---|
77 | |
---|
78 | ///Number of nodes. |
---|
79 | int nodeNum() const { return _nodeNum; } |
---|
80 | ///Number of edges. |
---|
81 | int edgeNum() const { return _edgeNum; } |
---|
82 | |
---|
83 | /// Maximum node ID. |
---|
84 | |
---|
85 | /// Maximum node ID. |
---|
86 | ///\sa id(Node) |
---|
87 | int maxNodeId() const { return _nodeNum-1; } |
---|
88 | /// Maximum edge ID. |
---|
89 | |
---|
90 | /// Maximum edge ID. |
---|
91 | ///\sa id(Edge) |
---|
92 | int maxEdgeId() const { return _edgeNum-1; } |
---|
93 | |
---|
94 | Node source(Edge e) const { return e.id % _nodeNum; } |
---|
95 | Node target(Edge e) const { return e.id / _nodeNum; } |
---|
96 | |
---|
97 | |
---|
98 | /// Node ID. |
---|
99 | |
---|
100 | /// The ID of a valid Node is a nonnegative integer not greater than |
---|
101 | /// \ref maxNodeId(). The range of the ID's is not surely continuous |
---|
102 | /// and the greatest node ID can be actually less then \ref maxNodeId(). |
---|
103 | /// |
---|
104 | /// The ID of the \ref INVALID node is -1. |
---|
105 | ///\return The ID of the node \c v. |
---|
106 | |
---|
107 | static int id(Node v) { return v.id; } |
---|
108 | /// Edge ID. |
---|
109 | |
---|
110 | /// The ID of a valid Edge is a nonnegative integer not greater than |
---|
111 | /// \ref maxEdgeId(). The range of the ID's is not surely continuous |
---|
112 | /// and the greatest edge ID can be actually less then \ref maxEdgeId(). |
---|
113 | /// |
---|
114 | /// The ID of the \ref INVALID edge is -1. |
---|
115 | ///\return The ID of the edge \c e. |
---|
116 | static int id(Edge e) { return e.id; } |
---|
117 | |
---|
118 | static Node nodeFromId(int id) { return Node(id);} |
---|
119 | |
---|
120 | static Edge edgeFromId(int id) { return Edge(id);} |
---|
121 | |
---|
122 | typedef True FindEdgeTag; |
---|
123 | |
---|
124 | /// Finds an edge between two nodes. |
---|
125 | |
---|
126 | /// Finds an edge from node \c u to node \c v. |
---|
127 | /// |
---|
128 | /// If \c prev is \ref INVALID (this is the default value), then |
---|
129 | /// It finds the first edge from \c u to \c v. Otherwise it looks for |
---|
130 | /// the next edge from \c u to \c v after \c prev. |
---|
131 | /// \return The found edge or INVALID if there is no such an edge. |
---|
132 | Edge findEdge(Node u,Node v, Edge prev = INVALID) const { |
---|
133 | return prev.id == -1 ? Edge(*this, u.id, v.id) : INVALID; |
---|
134 | } |
---|
135 | |
---|
136 | |
---|
137 | class Node { |
---|
138 | friend class FullGraphBase; |
---|
139 | |
---|
140 | protected: |
---|
141 | int id; |
---|
142 | Node(int _id) : id(_id) {} |
---|
143 | public: |
---|
144 | Node() {} |
---|
145 | Node (Invalid) : id(-1) {} |
---|
146 | bool operator==(const Node node) const {return id == node.id;} |
---|
147 | bool operator!=(const Node node) const {return id != node.id;} |
---|
148 | bool operator<(const Node node) const {return id < node.id;} |
---|
149 | }; |
---|
150 | |
---|
151 | |
---|
152 | |
---|
153 | class Edge { |
---|
154 | friend class FullGraphBase; |
---|
155 | |
---|
156 | protected: |
---|
157 | int id; // _nodeNum * target + source; |
---|
158 | |
---|
159 | Edge(int _id) : id(_id) {} |
---|
160 | |
---|
161 | Edge(const FullGraphBase& _graph, int source, int target) |
---|
162 | : id(_graph._nodeNum * target+source) {} |
---|
163 | public: |
---|
164 | Edge() { } |
---|
165 | Edge (Invalid) { id = -1; } |
---|
166 | bool operator==(const Edge edge) const {return id == edge.id;} |
---|
167 | bool operator!=(const Edge edge) const {return id != edge.id;} |
---|
168 | bool operator<(const Edge edge) const {return id < edge.id;} |
---|
169 | }; |
---|
170 | |
---|
171 | void first(Node& node) const { |
---|
172 | node.id = _nodeNum-1; |
---|
173 | } |
---|
174 | |
---|
175 | static void next(Node& node) { |
---|
176 | --node.id; |
---|
177 | } |
---|
178 | |
---|
179 | void first(Edge& edge) const { |
---|
180 | edge.id = _edgeNum-1; |
---|
181 | } |
---|
182 | |
---|
183 | static void next(Edge& edge) { |
---|
184 | --edge.id; |
---|
185 | } |
---|
186 | |
---|
187 | void firstOut(Edge& edge, const Node& node) const { |
---|
188 | edge.id = _edgeNum + node.id - _nodeNum; |
---|
189 | } |
---|
190 | |
---|
191 | void nextOut(Edge& edge) const { |
---|
192 | edge.id -= _nodeNum; |
---|
193 | if (edge.id < 0) edge.id = -1; |
---|
194 | } |
---|
195 | |
---|
196 | void firstIn(Edge& edge, const Node& node) const { |
---|
197 | edge.id = node.id * _nodeNum; |
---|
198 | } |
---|
199 | |
---|
200 | void nextIn(Edge& edge) const { |
---|
201 | ++edge.id; |
---|
202 | if (edge.id % _nodeNum == 0) edge.id = -1; |
---|
203 | } |
---|
204 | |
---|
205 | }; |
---|
206 | |
---|
207 | typedef GraphExtender<FullGraphBase> ExtendedFullGraphBase; |
---|
208 | |
---|
209 | /// \ingroup graphs |
---|
210 | /// |
---|
211 | /// \brief A full graph class. |
---|
212 | /// |
---|
213 | /// This is a simple and fast directed full graph implementation. |
---|
214 | /// It is completely static, so you can neither add nor delete either |
---|
215 | /// edges or nodes. |
---|
216 | /// Thus it conforms to |
---|
217 | /// the \ref concept::StaticGraph "StaticGraph" concept |
---|
218 | /// \sa concept::StaticGraph. |
---|
219 | /// |
---|
220 | /// \sa FullGraphBase |
---|
221 | /// \sa FullUGraph |
---|
222 | /// |
---|
223 | /// \author Alpar Juttner |
---|
224 | class FullGraph : public ExtendedFullGraphBase { |
---|
225 | public: |
---|
226 | |
---|
227 | typedef ExtendedFullGraphBase Parent; |
---|
228 | |
---|
229 | /// \brief Constructor |
---|
230 | FullGraph() { construct(0); } |
---|
231 | |
---|
232 | /// \brief Constructor |
---|
233 | /// |
---|
234 | FullGraph(int n) { construct(n); } |
---|
235 | |
---|
236 | /// \brief Resize the graph |
---|
237 | /// |
---|
238 | /// Resize the graph. The function will fully destroy and build the graph. |
---|
239 | /// This cause that the maps of the graph will reallocated |
---|
240 | /// automatically and the previous values will be lost. |
---|
241 | void resize(int n) { |
---|
242 | Parent::getNotifier(Edge()).clear(); |
---|
243 | Parent::getNotifier(Node()).clear(); |
---|
244 | construct(n); |
---|
245 | Parent::getNotifier(Node()).build(); |
---|
246 | Parent::getNotifier(Edge()).build(); |
---|
247 | } |
---|
248 | }; |
---|
249 | |
---|
250 | |
---|
251 | /// \brief Base of the FullUGrpah. |
---|
252 | /// |
---|
253 | /// Base of the FullUGrpah. |
---|
254 | class FullUGraphBase { |
---|
255 | int _nodeNum; |
---|
256 | int _edgeNum; |
---|
257 | public: |
---|
258 | |
---|
259 | typedef FullUGraphBase Graph; |
---|
260 | |
---|
261 | class Node; |
---|
262 | class Edge; |
---|
263 | |
---|
264 | public: |
---|
265 | |
---|
266 | FullUGraphBase() {} |
---|
267 | |
---|
268 | |
---|
269 | ///Creates a full graph with \c n nodes. |
---|
270 | void construct(int n) { _nodeNum = n; _edgeNum = n * (n - 1) / 2; } |
---|
271 | |
---|
272 | /// \brief Returns the node with the given index. |
---|
273 | /// |
---|
274 | /// Returns the node with the given index. Because it is a |
---|
275 | /// static size graph the node's of the graph can be indiced |
---|
276 | /// by the range from 0 to \e nodeNum()-1 and the index of |
---|
277 | /// the node can accessed by the \e index() member. |
---|
278 | Node operator()(int index) const { return Node(index); } |
---|
279 | |
---|
280 | /// \brief Returns the index of the node. |
---|
281 | /// |
---|
282 | /// Returns the index of the node. Because it is a |
---|
283 | /// static size graph the node's of the graph can be indiced |
---|
284 | /// by the range from 0 to \e nodeNum()-1 and the index of |
---|
285 | /// the node can accessed by the \e index() member. |
---|
286 | int index(const Node& node) const { return node.id; } |
---|
287 | |
---|
288 | typedef True NodeNumTag; |
---|
289 | typedef True EdgeNumTag; |
---|
290 | |
---|
291 | ///Number of nodes. |
---|
292 | int nodeNum() const { return _nodeNum; } |
---|
293 | ///Number of edges. |
---|
294 | int edgeNum() const { return _edgeNum; } |
---|
295 | |
---|
296 | /// Maximum node ID. |
---|
297 | |
---|
298 | /// Maximum node ID. |
---|
299 | ///\sa id(Node) |
---|
300 | int maxNodeId() const { return _nodeNum-1; } |
---|
301 | /// Maximum edge ID. |
---|
302 | |
---|
303 | /// Maximum edge ID. |
---|
304 | ///\sa id(Edge) |
---|
305 | int maxEdgeId() const { return _edgeNum-1; } |
---|
306 | |
---|
307 | /// \brief Returns the node from its \c id. |
---|
308 | /// |
---|
309 | /// Returns the node from its \c id. If there is not node |
---|
310 | /// with the given id the effect of the function is undefinied. |
---|
311 | static Node nodeFromId(int id) { return Node(id);} |
---|
312 | |
---|
313 | /// \brief Returns the edge from its \c id. |
---|
314 | /// |
---|
315 | /// Returns the edge from its \c id. If there is not edge |
---|
316 | /// with the given id the effect of the function is undefinied. |
---|
317 | static Edge edgeFromId(int id) { return Edge(id);} |
---|
318 | |
---|
319 | Node source(Edge e) const { |
---|
320 | /// \todo we may do it faster |
---|
321 | return Node(((int)sqrt((double)(1 + 8 * e.id)) + 1) / 2); |
---|
322 | } |
---|
323 | |
---|
324 | Node target(Edge e) const { |
---|
325 | int source = ((int)sqrt((double)(1 + 8 * e.id)) + 1) / 2;; |
---|
326 | return Node(e.id - (source) * (source - 1) / 2); |
---|
327 | } |
---|
328 | |
---|
329 | |
---|
330 | /// \brief Node ID. |
---|
331 | /// |
---|
332 | /// The ID of a valid Node is a nonnegative integer not greater than |
---|
333 | /// \ref maxNodeId(). The range of the ID's is not surely continuous |
---|
334 | /// and the greatest node ID can be actually less then \ref maxNodeId(). |
---|
335 | /// |
---|
336 | /// The ID of the \ref INVALID node is -1. |
---|
337 | /// \return The ID of the node \c v. |
---|
338 | |
---|
339 | static int id(Node v) { return v.id; } |
---|
340 | |
---|
341 | /// \brief Edge ID. |
---|
342 | /// |
---|
343 | /// The ID of a valid Edge is a nonnegative integer not greater than |
---|
344 | /// \ref maxEdgeId(). The range of the ID's is not surely continuous |
---|
345 | /// and the greatest edge ID can be actually less then \ref maxEdgeId(). |
---|
346 | /// |
---|
347 | /// The ID of the \ref INVALID edge is -1. |
---|
348 | ///\return The ID of the edge \c e. |
---|
349 | static int id(Edge e) { return e.id; } |
---|
350 | |
---|
351 | /// \brief Finds an edge between two nodes. |
---|
352 | /// |
---|
353 | /// Finds an edge from node \c u to node \c v. |
---|
354 | /// |
---|
355 | /// If \c prev is \ref INVALID (this is the default value), then |
---|
356 | /// It finds the first edge from \c u to \c v. Otherwise it looks for |
---|
357 | /// the next edge from \c u to \c v after \c prev. |
---|
358 | /// \return The found edge or INVALID if there is no such an edge. |
---|
359 | Edge findEdge(Node u, Node v, Edge prev = INVALID) const { |
---|
360 | if (prev.id != -1 || u.id <= v.id) return Edge(-1); |
---|
361 | return Edge(u.id * (u.id - 1) / 2 + v.id); |
---|
362 | } |
---|
363 | |
---|
364 | typedef True FindEdgeTag; |
---|
365 | |
---|
366 | |
---|
367 | class Node { |
---|
368 | friend class FullUGraphBase; |
---|
369 | |
---|
370 | protected: |
---|
371 | int id; |
---|
372 | Node(int _id) { id = _id;} |
---|
373 | public: |
---|
374 | Node() {} |
---|
375 | Node (Invalid) { id = -1; } |
---|
376 | bool operator==(const Node node) const {return id == node.id;} |
---|
377 | bool operator!=(const Node node) const {return id != node.id;} |
---|
378 | bool operator<(const Node node) const {return id < node.id;} |
---|
379 | }; |
---|
380 | |
---|
381 | |
---|
382 | |
---|
383 | class Edge { |
---|
384 | friend class FullUGraphBase; |
---|
385 | |
---|
386 | protected: |
---|
387 | int id; // _nodeNum * target + source; |
---|
388 | |
---|
389 | Edge(int _id) : id(_id) {} |
---|
390 | |
---|
391 | public: |
---|
392 | Edge() { } |
---|
393 | Edge (Invalid) { id = -1; } |
---|
394 | bool operator==(const Edge edge) const {return id == edge.id;} |
---|
395 | bool operator!=(const Edge edge) const {return id != edge.id;} |
---|
396 | bool operator<(const Edge edge) const {return id < edge.id;} |
---|
397 | }; |
---|
398 | |
---|
399 | void first(Node& node) const { |
---|
400 | node.id = _nodeNum - 1; |
---|
401 | } |
---|
402 | |
---|
403 | static void next(Node& node) { |
---|
404 | --node.id; |
---|
405 | } |
---|
406 | |
---|
407 | void first(Edge& edge) const { |
---|
408 | edge.id = _edgeNum - 1; |
---|
409 | } |
---|
410 | |
---|
411 | static void next(Edge& edge) { |
---|
412 | --edge.id; |
---|
413 | } |
---|
414 | |
---|
415 | void firstOut(Edge& edge, const Node& node) const { |
---|
416 | int src = node.id; |
---|
417 | int trg = 0; |
---|
418 | edge.id = (trg < src ? src * (src - 1) / 2 + trg : -1); |
---|
419 | } |
---|
420 | |
---|
421 | /// \todo with specialized iterators we can make faster iterating |
---|
422 | void nextOut(Edge& edge) const { |
---|
423 | int src = source(edge).id; |
---|
424 | int trg = target(edge).id; |
---|
425 | ++trg; |
---|
426 | edge.id = (trg < src ? src * (src - 1) / 2 + trg : -1); |
---|
427 | } |
---|
428 | |
---|
429 | void firstIn(Edge& edge, const Node& node) const { |
---|
430 | int src = node.id + 1; |
---|
431 | int trg = node.id; |
---|
432 | edge.id = (src < _nodeNum ? src * (src - 1) / 2 + trg : -1); |
---|
433 | } |
---|
434 | |
---|
435 | void nextIn(Edge& edge) const { |
---|
436 | int src = source(edge).id; |
---|
437 | int trg = target(edge).id; |
---|
438 | ++src; |
---|
439 | edge.id = (src < _nodeNum ? src * (src - 1) / 2 + trg : -1); |
---|
440 | } |
---|
441 | |
---|
442 | }; |
---|
443 | |
---|
444 | typedef UGraphExtender<UGraphBaseExtender<FullUGraphBase> > |
---|
445 | ExtendedFullUGraphBase; |
---|
446 | |
---|
447 | /// \ingroup graphs |
---|
448 | /// |
---|
449 | /// \brief An undirected full graph class. |
---|
450 | /// |
---|
451 | /// This is a simple and fast undirected full graph implementation. |
---|
452 | /// It is completely static, so you can neither add nor delete either |
---|
453 | /// edges or nodes. |
---|
454 | /// |
---|
455 | /// The main difference beetween the \e FullGraph and \e FullUGraph class |
---|
456 | /// is that this class conforms to the undirected graph concept and |
---|
457 | /// it does not contain the loop edges. |
---|
458 | /// |
---|
459 | /// \sa FullUGraphBase |
---|
460 | /// \sa FullGraph |
---|
461 | /// |
---|
462 | /// \author Balazs Dezso |
---|
463 | class FullUGraph : public ExtendedFullUGraphBase { |
---|
464 | public: |
---|
465 | |
---|
466 | typedef ExtendedFullUGraphBase Parent; |
---|
467 | |
---|
468 | /// \brief Constructor |
---|
469 | FullUGraph() { construct(0); } |
---|
470 | |
---|
471 | /// \brief Constructor |
---|
472 | FullUGraph(int n) { construct(n); } |
---|
473 | |
---|
474 | /// \brief Resize the graph |
---|
475 | /// |
---|
476 | /// Resize the graph. The function will fully destroy and build the graph. |
---|
477 | /// This cause that the maps of the graph will reallocated |
---|
478 | /// automatically and the previous values will be lost. |
---|
479 | void resize(int n) { |
---|
480 | Parent::getNotifier(Edge()).clear(); |
---|
481 | Parent::getNotifier(UEdge()).clear(); |
---|
482 | Parent::getNotifier(Node()).clear(); |
---|
483 | construct(n); |
---|
484 | Parent::getNotifier(Node()).build(); |
---|
485 | Parent::getNotifier(UEdge()).build(); |
---|
486 | Parent::getNotifier(Edge()).build(); |
---|
487 | } |
---|
488 | }; |
---|
489 | |
---|
490 | |
---|
491 | class FullBpUGraphBase { |
---|
492 | protected: |
---|
493 | |
---|
494 | int _aNodeNum; |
---|
495 | int _bNodeNum; |
---|
496 | |
---|
497 | int _edgeNum; |
---|
498 | |
---|
499 | public: |
---|
500 | |
---|
501 | class NodeSetError : public LogicError { |
---|
502 | virtual const char* exceptionName() const { |
---|
503 | return "lemon::FullBpUGraph::NodeSetError"; |
---|
504 | } |
---|
505 | }; |
---|
506 | |
---|
507 | class Node { |
---|
508 | friend class FullBpUGraphBase; |
---|
509 | protected: |
---|
510 | int id; |
---|
511 | |
---|
512 | Node(int _id) : id(_id) {} |
---|
513 | public: |
---|
514 | Node() {} |
---|
515 | Node(Invalid) { id = -1; } |
---|
516 | bool operator==(const Node i) const {return id==i.id;} |
---|
517 | bool operator!=(const Node i) const {return id!=i.id;} |
---|
518 | bool operator<(const Node i) const {return id<i.id;} |
---|
519 | }; |
---|
520 | |
---|
521 | class Edge { |
---|
522 | friend class FullBpUGraphBase; |
---|
523 | protected: |
---|
524 | int id; |
---|
525 | |
---|
526 | Edge(int _id) { id = _id;} |
---|
527 | public: |
---|
528 | Edge() {} |
---|
529 | Edge (Invalid) { id = -1; } |
---|
530 | bool operator==(const Edge i) const {return id==i.id;} |
---|
531 | bool operator!=(const Edge i) const {return id!=i.id;} |
---|
532 | bool operator<(const Edge i) const {return id<i.id;} |
---|
533 | }; |
---|
534 | |
---|
535 | void construct(int aNodeNum, int bNodeNum) { |
---|
536 | _aNodeNum = aNodeNum; |
---|
537 | _bNodeNum = bNodeNum; |
---|
538 | _edgeNum = aNodeNum * bNodeNum; |
---|
539 | } |
---|
540 | |
---|
541 | void firstANode(Node& node) const { |
---|
542 | node.id = 2 * _aNodeNum - 2; |
---|
543 | if (node.id < 0) node.id = -1; |
---|
544 | } |
---|
545 | void nextANode(Node& node) const { |
---|
546 | node.id -= 2; |
---|
547 | if (node.id < 0) node.id = -1; |
---|
548 | } |
---|
549 | |
---|
550 | void firstBNode(Node& node) const { |
---|
551 | node.id = 2 * _bNodeNum - 1; |
---|
552 | } |
---|
553 | void nextBNode(Node& node) const { |
---|
554 | node.id -= 2; |
---|
555 | } |
---|
556 | |
---|
557 | void first(Node& node) const { |
---|
558 | if (_aNodeNum > 0) { |
---|
559 | node.id = 2 * _aNodeNum - 2; |
---|
560 | } else { |
---|
561 | node.id = 2 * _bNodeNum - 1; |
---|
562 | } |
---|
563 | } |
---|
564 | void next(Node& node) const { |
---|
565 | node.id -= 2; |
---|
566 | if (node.id == -2) { |
---|
567 | node.id = 2 * _bNodeNum - 1; |
---|
568 | } |
---|
569 | } |
---|
570 | |
---|
571 | void first(Edge& edge) const { |
---|
572 | edge.id = _edgeNum - 1; |
---|
573 | } |
---|
574 | void next(Edge& edge) const { |
---|
575 | --edge.id; |
---|
576 | } |
---|
577 | |
---|
578 | void firstOut(Edge& edge, const Node& node) const { |
---|
579 | LEMON_ASSERT((node.id & 1) == 0, NodeSetError()); |
---|
580 | edge.id = (node.id >> 1) * _bNodeNum; |
---|
581 | } |
---|
582 | void nextOut(Edge& edge) const { |
---|
583 | ++(edge.id); |
---|
584 | if (edge.id % _bNodeNum == 0) edge.id = -1; |
---|
585 | } |
---|
586 | |
---|
587 | void firstIn(Edge& edge, const Node& node) const { |
---|
588 | LEMON_ASSERT((node.id & 1) == 1, NodeSetError()); |
---|
589 | edge.id = (node.id >> 1); |
---|
590 | } |
---|
591 | void nextIn(Edge& edge) const { |
---|
592 | edge.id += _bNodeNum; |
---|
593 | if (edge.id >= _edgeNum) edge.id = -1; |
---|
594 | } |
---|
595 | |
---|
596 | static int id(const Node& node) { |
---|
597 | return node.id; |
---|
598 | } |
---|
599 | static Node nodeFromId(int id) { |
---|
600 | return Node(id); |
---|
601 | } |
---|
602 | int maxNodeId() const { |
---|
603 | return _aNodeNum > _bNodeNum ? |
---|
604 | _aNodeNum * 2 - 2 : _bNodeNum * 2 - 1; |
---|
605 | } |
---|
606 | |
---|
607 | static int id(const Edge& edge) { |
---|
608 | return edge.id; |
---|
609 | } |
---|
610 | static Edge edgeFromId(int id) { |
---|
611 | return Edge(id); |
---|
612 | } |
---|
613 | int maxEdgeId() const { |
---|
614 | return _edgeNum - 1; |
---|
615 | } |
---|
616 | |
---|
617 | static int aNodeId(const Node& node) { |
---|
618 | return node.id >> 1; |
---|
619 | } |
---|
620 | static Node fromANodeId(int id) { |
---|
621 | return Node(id << 1); |
---|
622 | } |
---|
623 | int maxANodeId() const { |
---|
624 | return _aNodeNum; |
---|
625 | } |
---|
626 | |
---|
627 | static int bNodeId(const Node& node) { |
---|
628 | return node.id >> 1; |
---|
629 | } |
---|
630 | static Node fromBNodeId(int id) { |
---|
631 | return Node((id << 1) + 1); |
---|
632 | } |
---|
633 | int maxBNodeId() const { |
---|
634 | return _bNodeNum; |
---|
635 | } |
---|
636 | |
---|
637 | Node aNode(const Edge& edge) const { |
---|
638 | return Node((edge.id / _bNodeNum) << 1); |
---|
639 | } |
---|
640 | Node bNode(const Edge& edge) const { |
---|
641 | return Node(((edge.id % _bNodeNum) << 1) + 1); |
---|
642 | } |
---|
643 | |
---|
644 | static bool aNode(const Node& node) { |
---|
645 | return (node.id & 1) == 0; |
---|
646 | } |
---|
647 | |
---|
648 | static bool bNode(const Node& node) { |
---|
649 | return (node.id & 1) == 1; |
---|
650 | } |
---|
651 | |
---|
652 | static Node aNode(int index) { |
---|
653 | return Node(index << 1); |
---|
654 | } |
---|
655 | |
---|
656 | static Node bNode(int index) { |
---|
657 | return Node((index << 1) + 1); |
---|
658 | } |
---|
659 | |
---|
660 | typedef True NodeNumTag; |
---|
661 | int nodeNum() const { return _aNodeNum + _bNodeNum; } |
---|
662 | int aNodeNum() const { return _aNodeNum; } |
---|
663 | int bNodeNum() const { return _bNodeNum; } |
---|
664 | |
---|
665 | typedef True EdgeNumTag; |
---|
666 | int edgeNum() const { return _edgeNum; } |
---|
667 | |
---|
668 | }; |
---|
669 | |
---|
670 | |
---|
671 | typedef BpUGraphExtender< BpUGraphBaseExtender< |
---|
672 | FullBpUGraphBase> > ExtendedFullBpUGraphBase; |
---|
673 | |
---|
674 | |
---|
675 | /// \ingroup graphs |
---|
676 | /// |
---|
677 | /// \brief An undirected full bipartite graph class. |
---|
678 | /// |
---|
679 | /// This is a simple and fast bipartite undirected full graph implementation. |
---|
680 | /// It is completely static, so you can neither add nor delete either |
---|
681 | /// edges or nodes. |
---|
682 | /// |
---|
683 | /// \sa FullUGraphBase |
---|
684 | /// \sa FullGraph |
---|
685 | /// |
---|
686 | /// \author Balazs Dezso |
---|
687 | class FullBpUGraph : |
---|
688 | public ExtendedFullBpUGraphBase { |
---|
689 | public: |
---|
690 | |
---|
691 | typedef ExtendedFullBpUGraphBase Parent; |
---|
692 | |
---|
693 | FullBpUGraph() { |
---|
694 | Parent::construct(0, 0); |
---|
695 | } |
---|
696 | |
---|
697 | FullBpUGraph(int aNodeNum, int bNodeNum) { |
---|
698 | Parent::construct(aNodeNum, bNodeNum); |
---|
699 | } |
---|
700 | |
---|
701 | /// \brief Resize the graph |
---|
702 | /// |
---|
703 | void resize(int n, int m) { |
---|
704 | Parent::getNotifier(Edge()).clear(); |
---|
705 | Parent::getNotifier(UEdge()).clear(); |
---|
706 | Parent::getNotifier(Node()).clear(); |
---|
707 | Parent::getNotifier(ANode()).clear(); |
---|
708 | Parent::getNotifier(BNode()).clear(); |
---|
709 | construct(n, m); |
---|
710 | Parent::getNotifier(ANode()).build(); |
---|
711 | Parent::getNotifier(BNode()).build(); |
---|
712 | Parent::getNotifier(Node()).build(); |
---|
713 | Parent::getNotifier(UEdge()).build(); |
---|
714 | Parent::getNotifier(Edge()).build(); |
---|
715 | } |
---|
716 | }; |
---|
717 | |
---|
718 | } //namespace lemon |
---|
719 | |
---|
720 | |
---|
721 | #endif //LEMON_FULL_GRAPH_H |
---|