test/heap_test.h
author Balazs Dezso <deba@inf.elte.hu>
Wed, 26 Mar 2008 17:28:28 +0100
changeset 109 abddaa08b507
permissions -rw-r--r--
Porting SmartGraph from svn -r 3481
alpar@100
     1
/* -*- C++ -*-
alpar@100
     2
 *
alpar@100
     3
 * This file is a part of LEMON, a generic C++ optimization library
alpar@100
     4
 *
alpar@100
     5
 * Copyright (C) 2003-2008
alpar@100
     6
 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
alpar@100
     7
 * (Egervary Research Group on Combinatorial Optimization, EGRES).
alpar@100
     8
 *
alpar@100
     9
 * Permission to use, modify and distribute this software is granted
alpar@100
    10
 * provided that this copyright notice appears in all copies. For
alpar@100
    11
 * precise terms see the accompanying LICENSE file.
alpar@100
    12
 *
alpar@100
    13
 * This software is provided "AS IS" with no warranty of any kind,
alpar@100
    14
 * express or implied, and with no claim as to its suitability for any
alpar@100
    15
 * purpose.
alpar@100
    16
 *
alpar@100
    17
 */
alpar@100
    18
alpar@100
    19
#include <vector>
alpar@100
    20
#include <algorithm>
alpar@100
    21
alpar@100
    22
#include <lemon/dijkstra.h>
alpar@100
    23
alpar@100
    24
class IntIntMap : public std::vector<int> {
alpar@100
    25
public:
alpar@100
    26
  typedef std::vector<int> Parent;
alpar@100
    27
alpar@100
    28
  typedef int Key;
alpar@100
    29
  typedef int Value;
alpar@100
    30
alpar@100
    31
  IntIntMap() : Parent() {}
alpar@100
    32
  IntIntMap(int n) : Parent(n) {}
alpar@100
    33
  IntIntMap(int n, int v) : Parent(n, v) {}
alpar@100
    34
alpar@100
    35
  void set(int key, int value) {
alpar@100
    36
    Parent::operator[](key) = value;
alpar@100
    37
  }
alpar@100
    38
};
alpar@100
    39
alpar@100
    40
alpar@100
    41
template <typename _Heap>
alpar@100
    42
void heapSortTest(int n) {
alpar@100
    43
  typedef _Heap Heap;
alpar@100
    44
  IntIntMap map(n, -1);
alpar@100
    45
alpar@100
    46
  Heap heap(map);
alpar@100
    47
  
alpar@100
    48
  std::vector<int> v(n);
alpar@100
    49
alpar@100
    50
  for (int i = 0; i < n; ++i) {
alpar@100
    51
    v[i] = rnd[1000];
alpar@100
    52
    heap.push(i, v[i]);
alpar@100
    53
  }
alpar@100
    54
  std::sort(v.begin(), v.end());
alpar@100
    55
  for (int i = 0; i < n; ++i) {
alpar@100
    56
    check(v[i] == heap.prio() ,"Wrong order in heap sort.");
alpar@100
    57
    heap.pop();
alpar@100
    58
  }
alpar@100
    59
}
alpar@100
    60
alpar@100
    61
template <typename _Heap>
alpar@100
    62
void heapIncreaseTest(int n) {
alpar@100
    63
  typedef _Heap Heap;
alpar@100
    64
  IntIntMap map(n, -1);
alpar@100
    65
alpar@100
    66
  Heap heap(map);
alpar@100
    67
  
alpar@100
    68
  std::vector<int> v(n);
alpar@100
    69
alpar@100
    70
  for (int i = 0; i < n; ++i) {
alpar@100
    71
    v[i] = rnd[1000];
alpar@100
    72
    heap.push(i, v[i]);
alpar@100
    73
  }
alpar@100
    74
  for (int i = 0; i < n; ++i) {
alpar@100
    75
    v[i] += rnd[1000];
alpar@100
    76
    heap.increase(i, v[i]);
alpar@100
    77
  }
alpar@100
    78
  std::sort(v.begin(), v.end());
alpar@100
    79
  for (int i = 0; i < n; ++i) {
alpar@100
    80
    check(v[i] == heap.prio() ,"Wrong order in heap increase test.");
alpar@100
    81
    heap.pop();
alpar@100
    82
  }
alpar@100
    83
}
alpar@100
    84
alpar@100
    85
alpar@100
    86
alpar@100
    87
template <typename _Digraph, typename _LengthMap, typename _Heap>
alpar@100
    88
void dijkstraHeapTest(_Digraph& digraph, _LengthMap& length,
alpar@100
    89
		      typename _Digraph::Node& start) {
alpar@100
    90
alpar@100
    91
  typedef _Heap Heap;
alpar@100
    92
  typedef _Digraph Digraph;
alpar@100
    93
  typedef _LengthMap LengthMap;
alpar@100
    94
alpar@100
    95
  typedef typename Digraph::Node Node;
alpar@100
    96
  typedef typename Digraph::Arc Arc;
alpar@100
    97
  typedef typename Digraph::NodeIt NodeIt;
alpar@100
    98
  typedef typename Digraph::ArcIt ArcIt;
alpar@100
    99
alpar@100
   100
  typename Dijkstra<Digraph, LengthMap>::template DefStandardHeap<Heap>::
alpar@100
   101
    Create dijkstra(digraph, length);
alpar@100
   102
alpar@100
   103
  dijkstra.run(start);
alpar@100
   104
alpar@100
   105
  for(ArcIt e(digraph); e!=INVALID; ++e) {
alpar@100
   106
    Node u=digraph.source(e); 
alpar@100
   107
    Node v=digraph.target(e);
alpar@100
   108
    if (dijkstra.reached(u)) {
alpar@100
   109
      check( dijkstra.dist(v) - dijkstra.dist(u) <= length[e],
alpar@100
   110
      	     "Error in a shortest path tree arc!");
alpar@100
   111
    }
alpar@100
   112
  }
alpar@100
   113
alpar@100
   114
  for(NodeIt v(digraph); v!=INVALID; ++v) {
alpar@100
   115
    if ( dijkstra.reached(v) && dijkstra.predArc(v) != INVALID ) {
alpar@100
   116
      Arc e=dijkstra.predArc(v);
alpar@100
   117
      Node u=digraph.source(e);
alpar@100
   118
      check( dijkstra.dist(v) - dijkstra .dist(u) == length[e],
alpar@100
   119
	     "Error in a shortest path tree arc!");
alpar@100
   120
    }
alpar@100
   121
  }
alpar@100
   122
alpar@100
   123
}