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            public void fitness() {
                double[] sum = new double[POP_SIZE]; //´´½¨Ò»¸öÕûÐÎÊý×飬Êý×éµÄ³¤¶ÈÊÇdimention
        for (int j = 0; j < pop.length; j++)
        {
                sum[j] = 0; //¸øÊý×é³õʼ»¯
        }
                for (int i = 0; i < pop.length; i++) {//ÖÖȺ´óС
                        for(int j = 0;j<DIMENTION-1;j++)//¸öÌå»ùÒò³¤¶È
                        {
                                double l= (pop.gene[j]-1)*(pop.gene[j]-1);
                                double k = 100*(pop.gene[j]*pop.gene[j]-pop.gene[j+1])
                                                *(pop.gene[j]*pop.gene[j]-pop.gene[j+1]);
                                sum+= l+k;
                        }
                        pop.fitness = sum ;
                        pop1.fitness =sum;
                }
        }
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