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) 2003-2008 |
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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 <lemon/time_measure.h> |
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20 | #include <lemon/smart_graph.h> |
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21 | #include <lemon/graph_utils.h> |
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22 | #include <lemon/maps.h> |
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23 | #include <lemon/radix_sort.h> |
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24 | |
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25 | #include "test_tools.h" |
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26 | |
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27 | |
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28 | #include <vector> |
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29 | #include <algorithm> |
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30 | #include <cmath> |
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31 | |
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32 | using namespace std; |
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33 | using namespace lemon; |
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34 | |
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35 | typedef unsigned char uchar; |
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36 | |
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37 | void checkRadixSort() { |
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38 | { |
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39 | int n = 10000; |
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40 | vector<int> data1(n), data2(n); |
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41 | for (int i = 0; i < n; ++i) { |
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42 | data1[i] = data2[i] = rnd[1000] - 500; |
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43 | } |
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44 | radixSort(data1.begin(), data1.end()); |
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45 | sort(data2.begin(), data2.end()); |
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46 | for (int i = 0; i < n; ++i) { |
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47 | check(data1[i] == data2[i], "Test failed"); |
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48 | } |
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49 | } { |
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50 | int n = 10000; |
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51 | vector<unsigned char> data1(n), data2(n); |
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52 | for (int i = 0; i < n; ++i) { |
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53 | data1[i] = data2[i] = rnd[uchar(200)]; |
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54 | } |
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55 | radixSort(data1.begin(), data1.end()); |
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56 | sort(data2.begin(), data2.end()); |
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57 | for (int i = 0; i < n; ++i) { |
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58 | check(data1[i] == data2[i], "Test failed"); |
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59 | } |
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60 | } |
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61 | } |
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62 | |
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63 | |
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64 | void checkCounterSort() { |
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65 | { |
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66 | int n = 10000; |
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67 | vector<int> data1(n), data2(n); |
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68 | for (int i = 0; i < n; ++i) { |
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69 | data1[i] = data2[i] = rnd[1000] - 500; |
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70 | } |
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71 | counterSort(data1.begin(), data1.end()); |
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72 | sort(data2.begin(), data2.end()); |
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73 | for (int i = 0; i < n; ++i) { |
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74 | check(data1[i] == data2[i], "Test failed"); |
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75 | } |
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76 | } { |
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77 | int n = 10000; |
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78 | vector<unsigned char> data1(n), data2(n); |
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79 | for (int i = 0; i < n; ++i) { |
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80 | data1[i] = data2[i] = rnd[uchar(200)]; |
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81 | } |
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82 | counterSort(data1.begin(), data1.end()); |
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83 | sort(data2.begin(), data2.end()); |
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84 | for (int i = 0; i < n; ++i) { |
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85 | check(data1[i] == data2[i], "Test failed"); |
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86 | } |
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87 | } |
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88 | } |
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89 | |
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90 | void checkSorts() { |
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91 | checkRadixSort(); |
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92 | checkCounterSort(); |
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93 | } |
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94 | |
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95 | void checkGraphRadixSort() { |
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96 | typedef SmartGraph Graph; |
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97 | typedef Graph::Node Node; |
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98 | typedef Graph::Edge Edge; |
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99 | |
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100 | const int n = 100; |
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101 | const int e = int(n * log(double(n))); |
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102 | |
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103 | Graph graph; |
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104 | vector<Node> nodes; |
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105 | |
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106 | for (int i = 0; i < n; ++i) { |
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107 | nodes.push_back(graph.addNode()); |
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108 | } |
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109 | vector<Edge> edges; |
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110 | for (int i = 0; i < e; ++i) { |
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111 | int s = rnd[n]; |
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112 | int t = rnd[n]; |
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113 | edges.push_back(graph.addEdge(nodes[s], nodes[t])); |
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114 | } |
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115 | |
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116 | radixSort(edges.begin(), edges.end(), |
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117 | mapFunctor(composeMap(IdMap<Graph, Node>(graph), |
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118 | sourceMap(graph)))); |
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119 | |
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120 | Graph::EdgeMap<bool> was(graph, false); |
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121 | |
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122 | for (int i = 0; i < int(edges.size()); ++i) { |
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123 | check(!was[edges[i]], "Test failed"); |
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124 | was[edges[i]] = true; |
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125 | } |
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126 | |
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127 | for (int i = 1; i < int(edges.size()); ++i) { |
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128 | check(graph.id(graph.source(edges[i - 1])) <= |
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129 | graph.id(graph.source(edges[i])), "Test failed"); |
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130 | } |
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131 | |
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132 | } |
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133 | |
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134 | void checkGraphCounterSort() { |
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135 | typedef SmartGraph Graph; |
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136 | typedef Graph::Node Node; |
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137 | typedef Graph::Edge Edge; |
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138 | |
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139 | const int n = 100; |
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140 | const int e = int(n * log(double(n))); |
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141 | |
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142 | Graph graph; |
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143 | vector<Node> nodes; |
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144 | |
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145 | for (int i = 0; i < n; ++i) { |
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146 | nodes.push_back(graph.addNode()); |
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147 | } |
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148 | vector<Edge> edges; |
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149 | for (int i = 0; i < e; ++i) { |
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150 | int s = rnd[n]; |
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151 | int t = rnd[n]; |
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152 | edges.push_back(graph.addEdge(nodes[s], nodes[t])); |
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153 | } |
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154 | |
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155 | counterSort(edges.begin(), edges.end(), |
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156 | mapFunctor(composeMap(IdMap<Graph, Node>(graph), |
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157 | sourceMap(graph)))); |
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158 | |
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159 | counterSort(edges.begin(), edges.end(), |
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160 | mapFunctor(composeMap(IdMap<Graph, Node>(graph), |
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161 | targetMap(graph)))); |
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162 | |
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163 | Graph::EdgeMap<bool> was(graph, false); |
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164 | |
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165 | for (int i = 0; i < int(edges.size()); ++i) { |
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166 | check(!was[edges[i]], "Test failed"); |
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167 | was[edges[i]] = true; |
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168 | } |
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169 | |
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170 | for (int i = 1; i < int(edges.size()); ++i) { |
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171 | check(graph.id(graph.target(edges[i - 1])) < |
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172 | graph.id(graph.target(edges[i])) || |
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173 | (graph.id(graph.target(edges[i - 1])) == |
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174 | graph.id(graph.target(edges[i])) && |
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175 | graph.id(graph.source(edges[i - 1])) <= |
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176 | graph.id(graph.source(edges[i]))), "Test failed"); |
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177 | } |
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178 | |
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179 | } |
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180 | |
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181 | void checkGraphSorts() { |
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182 | checkGraphRadixSort(); |
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183 | checkGraphCounterSort(); |
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184 | } |
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185 | |
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186 | int main() { |
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187 | checkSorts(); |
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188 | checkGraphSorts(); |
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189 | return 0; |
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190 | } |
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