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我正在制作一个遗传算法来处理将一系列字符演变成“Hello World”.问题是每当我初始化一个Chromosome对象并调用generateChromosome方法时,“test”群体的所有染色体都保持不变？

public class Chromosome{

private static int defaultLength = 11;

private static char []genes = new char[defaultLength];

//Generates a random char chromosome

public void generateChromosome(){

char []newGene = new char[defaultLength];

for(int x = 0; x

char gene = (char)(32+Math.round(96*Math.random()));

newGene[x] = gene;

}

genes = newGene;

}

//Returns a specific gene in the chromosome

public char getGene(int index){

return genes[index];

}

public char[] getChromosome(){

return genes;

}

public void setGene(char value, int index){

genes[index] = value;

}

public static void setDefaultLength(int amount){

defaultLength = amount;

}

public static int getDefaultLength(){

return defaultLength;

}

public int size(){

return genes.length;

}

@Override

public String toString(){

String geneString = "";

for(int x= 0; x

geneString += genes[x];

}

return geneString;

}

}