1 | /* -*- C++ -*- |
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2 | * |
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3 | * This file is a part of LEMON, a generic C++ optimization library |
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4 | * |
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5 | * Copyright (C) 2003-2006 |
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6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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8 | * |
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9 | * Permission to use, modify and distribute this software is granted |
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10 | * provided that this copyright notice appears in all copies. For |
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11 | * precise terms see the accompanying LICENSE file. |
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12 | * |
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13 | * This software is provided "AS IS" with no warranty of any kind, |
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14 | * express or implied, and with no claim as to its suitability for any |
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15 | * purpose. |
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16 | * |
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17 | */ |
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18 | |
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19 | #include <vector> |
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20 | #include <algorithm> |
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21 | |
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22 | #include <lemon/dijkstra.h> |
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23 | |
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24 | class IntIntMap : public std::vector<int> { |
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25 | public: |
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26 | typedef std::vector<int> Parent; |
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27 | |
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28 | IntIntMap() : Parent() {} |
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29 | IntIntMap(int n) : Parent(n) {} |
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30 | IntIntMap(int n, int v) : Parent(n, v) {} |
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31 | |
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32 | void set(int key, int value) { |
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33 | Parent::operator[](key) = value; |
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34 | } |
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35 | }; |
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36 | |
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37 | |
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38 | template <typename _Heap> |
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39 | void heapSortTest(int n) { |
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40 | typedef _Heap Heap; |
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41 | IntIntMap map(n, -1); |
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42 | |
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43 | Heap heap(map); |
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44 | |
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45 | std::vector<int> v(n); |
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46 | |
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47 | for (int i = 0; i < n; ++i) { |
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48 | v[i] = rand() % 1000; |
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49 | heap.push(i, v[i]); |
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50 | } |
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51 | std::sort(v.begin(), v.end()); |
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52 | for (int i = 0; i < n; ++i) { |
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53 | check(v[i] == heap.prio() ,"Wrong order in heap sort."); |
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54 | heap.pop(); |
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55 | } |
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56 | } |
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57 | |
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58 | template <typename _Heap> |
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59 | void heapIncreaseTest(int n) { |
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60 | typedef _Heap Heap; |
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61 | IntIntMap map(n, -1); |
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62 | |
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63 | Heap heap(map); |
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64 | |
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65 | std::vector<int> v(n); |
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66 | |
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67 | for (int i = 0; i < n; ++i) { |
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68 | v[i] = rand() % 1000; |
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69 | heap.push(i, v[i]); |
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70 | } |
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71 | for (int i = 0; i < n; ++i) { |
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72 | v[i] += rand() % 1000; |
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73 | heap.increase(i, v[i]); |
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74 | } |
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75 | std::sort(v.begin(), v.end()); |
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76 | for (int i = 0; i < n; ++i) { |
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77 | check(v[i] == heap.prio() ,"Wrong order in heap increase test."); |
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78 | heap.pop(); |
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79 | } |
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80 | } |
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81 | |
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82 | |
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83 | |
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84 | template <typename _Graph, typename _LengthMap, typename _Heap> |
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85 | void dijkstraHeapTest(_Graph& graph, _LengthMap& length, |
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86 | typename _Graph::Node& start) { |
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87 | |
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88 | typedef _Heap Heap; |
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89 | typedef _Graph Graph; |
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90 | typedef _LengthMap LengthMap; |
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91 | |
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92 | typedef typename Graph::Node Node; |
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93 | typedef typename Graph::Edge Edge; |
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94 | typedef typename Graph::NodeIt NodeIt; |
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95 | typedef typename Graph::EdgeIt EdgeIt; |
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96 | |
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97 | typename Dijkstra<Graph, LengthMap>::template DefStandardHeap<Heap>:: |
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98 | Create dijkstra(graph, length); |
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99 | |
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100 | dijkstra.run(start); |
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101 | |
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102 | for(EdgeIt e(graph); e!=INVALID; ++e) { |
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103 | Node u=graph.source(e); |
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104 | Node v=graph.target(e); |
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105 | if (dijkstra.reached(u)) { |
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106 | check( dijkstra.dist(v) - dijkstra.dist(u) <= length[e], |
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107 | "Error in a shortest path tree edge!"); |
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108 | } |
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109 | } |
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110 | |
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111 | for(NodeIt v(graph); v!=INVALID; ++v) { |
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112 | if ( dijkstra.reached(v) && dijkstra.predEdge(v) != INVALID ) { |
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113 | Edge e=dijkstra.predEdge(v); |
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114 | Node u=graph.source(e); |
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115 | check( dijkstra.dist(v) - dijkstra .dist(u) == length[e], |
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116 | "Error in a shortest path tree edge!"); |
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117 | } |
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118 | } |
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119 | |
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120 | } |
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