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added shuffle

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maartenkeijzer 2003-06-04 11:50:48 +00:00
commit 43b5effcdb
1 changed files with 7 additions and 0 deletions
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7
eo/src/eoStochasticUniversalSelect.h
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@ -31,6 +31,8 @@
#include <utils/eoRNG.h> #include <utils/eoRNG.h>
#include <eoSelectOne.h> #include <eoSelectOne.h>
#include <utils/selectors.h>
#include <eoPop.h>
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------
/** eoStochasticUniversalSelect: select an individual proportional to her stored fitness /** eoStochasticUniversalSelect: select an individual proportional to her stored fitness
@ -80,6 +82,11 @@ public:
i = 0; i = 0;
} }
} }
// shuffle
for (int i = indices.size() - 1; i > 0; --i) {
int j = rng.random(i+1);
swap(indices[i], indices[j]);
}
} }
/** do the selection, /** do the selection,