change lesson1 to Lesson1

git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@386 331e1502-861f-0410-8da2-ba01fb791d7f

branches/paradiseo-moeo-1.0/tutorial/Lesson1/FlowShopInit.h

@@ -0,0 +1,64 @@
+// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+//-----------------------------------------------------------------------------
+// FlowShopInit.h
+// (c) OPAC Team (LIFL), Dolphin Project (INRIA), 2007
+/*
+    This library...
+
+    Contact: paradiseo-help@lists.gforge.inria.fr, http://paradiseo.gforge.inria.fr
+ */
+//-----------------------------------------------------------------------------
+
+#ifndef FLOWSHOPINIT_H_
+#define FLOWSHOPINIT_H_
+
+#include <eoInit.h>
+#include "FlowShop.h"
+
+/**
+ * Functor
+ * Initialisation of a random genotype built by the default constructor of the eoFlowShop class
+ */
+class FlowShopInit: public eoInit<FlowShop> {
+
+public:
+
+    /**
+     * constructor
+     * @param const unsigned _N  the number of jobs to schedule
+     */
+    FlowShopInit(const unsigned _N) {
+        N = _N;
+    }
+
+    /**
+     * randomize a genotype
+     * @param FlowShop & _genotype  a genotype that has been default-constructed
+     */
+    void operator()(FlowShop & _genotype) {
+        // scheduling vector
+        vector<unsigned> scheduling(N);
+        // initialisation of possible values
+        vector<unsigned> possibles(N);
+        for (unsigned i=0 ; i<N ; i++)
+            possibles[i] = i;
+        // random initialization
+        unsigned rInd;     // random index
+        for (unsigned i=0; i<N; i++) {
+            rInd = (unsigned) rng.uniform(N-i);
+            scheduling[i] = possibles[rInd];
+            possibles[rInd] = possibles[N-i-1];
+        }
+        _genotype.setScheduling(scheduling);
+        _genotype.invalidate();	   // IMPORTANT in case the _genotype is old
+    }
+
+
+private:
+    /** the number of jobs (size of a scheduling vector) */
+    unsigned N;
+
+};
+
+#endif /*FLOWSHOPINIT_H_*/