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array.cpp

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00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
00002 /*
00003  *  Main authors:
00004  *     Christian Schulte <schulte@gecode.org>
00005  *
00006  *  Copyright:
00007  *     Christian Schulte, 2018
00008  *
00009  *  This file is part of Gecode, the generic constraint
00010  *  development environment:
00011  *     http://www.gecode.org
00012  *
00013  *  Permission is hereby granted, free of charge, to any person obtaining
00014  *  a copy of this software and associated documentation files (the
00015  *  "Software"), to deal in the Software without restriction, including
00016  *  without limitation the rights to use, copy, modify, merge, publish,
00017  *  distribute, sublicense, and/or sell copies of the Software, and to
00018  *  permit persons to whom the Software is furnished to do so, subject to
00019  *  the following conditions:
00020  *
00021  *  The above copyright notice and this permission notice shall be
00022  *  included in all copies or substantial portions of the Software.
00023  *
00024  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00025  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00026  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00027  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00028  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00029  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00030  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00031  *
00032  */
00033 
00034 #include <gecode/kernel.hh>
00035 
00036 namespace Gecode { namespace Kernel {
00037 
00038   bool
00039   duplicates(void** p, int n) {
00040     assert(n > 1);
00041     Support::quicksort<void*>(p,n);
00042     for (int i=1; i<n; i++)
00043       if (p[i-1] == p[i])
00044         return true;
00045     return false;
00046   }
00047 
00048   bool
00049   duplicates(void** p, int n, void** q, int m) {
00050     assert((n > 0) && (m > 0));
00051     Support::quicksort<void*>(p,n);
00052     Support::quicksort<void*>(q,m);
00053     int i=0, j=0;
00054     do {
00055       if (p[i] == q[j])
00056         return true;
00057       else if (p[i] < q[j])
00058         i++;
00059       else
00060         j++;
00061     } while ((i < n) && (j < m));
00062     return false;
00063   }
00064 
00065 }}
00066 
00067 // STATISTICS: kernel-other