61 lines
1.3 KiB
C++
61 lines
1.3 KiB
C++
// "partial_mapped_xover.cpp"
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// (c) OPAC Team, LIFL, 2003
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/*
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Contact: paradiseo-help@lists.gforge.inria.fr
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*/
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#include <assert.h>
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#include <utils/eoRNG.h>
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#include "partial_mapped_xover.h"
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#include "mix.h"
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void PartialMappedXover :: repair (Route & __route, unsigned __cut1, unsigned __cut2) {
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unsigned v [__route.size ()] ; // Number of times a cities are visited ...
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for (unsigned i = 0 ; i < __route.size () ; i ++)
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v [i] = 0 ;
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for (unsigned i = 0 ; i < __route.size () ; i ++)
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v [__route [i]] ++ ;
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std :: vector <unsigned> vert ;
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for (unsigned i = 0 ; i < __route.size () ; i ++)
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if (! v [i])
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vert.push_back (i) ;
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mix (vert) ;
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for (unsigned i = 0 ; i < __route.size () ; i ++)
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if (i < __cut1 || i >= __cut2)
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if (v [__route [i]] > 1) {
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__route [i] = vert.back () ;
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vert.pop_back () ;
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}
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}
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bool PartialMappedXover :: operator () (Route & __route1, Route & __route2) {
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unsigned cut1 = rng.random (__route1.size ()), cut2 = rng.random (__route2.size ()) ;
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if (cut2 < cut1)
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std :: swap (cut1, cut2) ;
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// Between the cuts
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for (unsigned i = cut1 ; i < cut2 ; i ++)
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std :: swap (__route1 [i], __route2 [i]) ;
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// Outside the cuts
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repair (__route1, cut1, cut2) ;
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repair (__route2, cut1, cut2) ;
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__route1.invalidate () ;
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__route2.invalidate () ;
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return true ;
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}
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