lemon: test/unionfind_test.cc@b79ff94e27d9

     1 /* -*- mode: C++; indent-tabs-mode: nil; -*-

     2  *

     3  * This file is a part of LEMON, a generic C++ optimization library.

     4  *

     5  * Copyright (C) 2003-2009

     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  */

    19 #include <lemon/list_graph.h>

    20 #include <lemon/maps.h>

    21 #include <lemon/unionfind.h>

    22 #include "test_tools.h"

    24 using namespace lemon;

    25 using namespace std;

    27 typedef UnionFindEnum<ListGraph::NodeMap<int> > UFE;

    29 int main() {

    30   ListGraph g;

    31   ListGraph::NodeMap<int> base(g);

    32   UFE U(base);

    33   vector<ListGraph::Node> n;

    35   for(int i=0;i<20;i++) n.push_back(g.addNode());

    37   U.insert(n[1]);

    38   U.insert(n[2]);

    40   check(U.join(n[1],n[2]) != -1, "Something is wrong with UnionFindEnum");

    42   U.insert(n[3]);

    43   U.insert(n[4]);

    44   U.insert(n[5]);

    45   U.insert(n[6]);

    46   U.insert(n[7]);

    49   check(U.join(n[1],n[4]) != -1, "Something is wrong with UnionFindEnum");

    50   check(U.join(n[2],n[4]) == -1, "Something is wrong with UnionFindEnum");

    51   check(U.join(n[3],n[5]) != -1, "Something is wrong with UnionFindEnum");

    54   U.insert(n[8],U.find(n[5]));

    57   check(U.size(U.find(n[4])) == 3, "Something is wrong with UnionFindEnum");

    58   check(U.size(U.find(n[5])) == 3, "Something is wrong with UnionFindEnum");

    59   check(U.size(U.find(n[6])) == 1, "Something is wrong with UnionFindEnum");

    60   check(U.size(U.find(n[2])) == 3, "Something is wrong with UnionFindEnum");

    63   U.insert(n[9]);

    64   U.insert(n[10],U.find(n[9]));

    67   check(U.join(n[8],n[10])  != -1, "Something is wrong with UnionFindEnum");

    70   check(U.size(U.find(n[4])) == 3, "Something is wrong with UnionFindEnum");

    71   check(U.size(U.find(n[9])) == 5, "Something is wrong with UnionFindEnum");

    73   check(U.size(U.find(n[8])) == 5, "Something is wrong with UnionFindEnum");

    75   U.erase(n[9]);

    76   U.erase(n[1]);

    78   check(U.size(U.find(n[10])) == 4, "Something is wrong with UnionFindEnum");

    79   check(U.size(U.find(n[2]))  == 2, "Something is wrong with UnionFindEnum");

    81   U.erase(n[6]);

    82   U.split(U.find(n[8]));

    85   check(U.size(U.find(n[4])) == 2, "Something is wrong with UnionFindEnum");

    86   check(U.size(U.find(n[3])) == 1, "Something is wrong with UnionFindEnum");

    87   check(U.size(U.find(n[2])) == 2, "Something is wrong with UnionFindEnum");

    90   check(U.join(n[3],n[4]) != -1, "Something is wrong with UnionFindEnum");

    91   check(U.join(n[2],n[4]) == -1, "Something is wrong with UnionFindEnum");

    94   check(U.size(U.find(n[4])) == 3, "Something is wrong with UnionFindEnum");

    95   check(U.size(U.find(n[3])) == 3, "Something is wrong with UnionFindEnum");

    96   check(U.size(U.find(n[2])) == 3, "Something is wrong with UnionFindEnum");

    98   U.eraseClass(U.find(n[4]));

    99   U.eraseClass(U.find(n[7]));

   101   return 0;

   102 }

author	Peter Kovacs <kpeter@inf.elte.hu>
	Sat, 07 Oct 2017 16:17:34 +0200
changeset 1411	b79ff94e27d9
parent 209	765619b7cbb2
permissions	-rw-r--r--