试试这样吧 private static void calculate(String[] number, String[] corlor, boolean[] v, int size,String lastColor,String lastNumber,int allNumber) { boolean flag=true; for(int i=0;i<size;i++ ){ if(!v[i]){ flag = false; } } if(flag){ if(allNumber>count){ count = allNumber; } return; } for(int i=0;i<size;i++){ if(v[i]){ continue; } v[i]=true; if(number[i].equals(lastNumber)||lastNumber.equals("")){ calculate(number, corlor, v, size, corlor[i], number[i],allNumber+1); } if(corlor[i].equals(lastColor)||lastColor.equals("")){ calculate(number, corlor, v, size, corlor[i], number[i],allNumber+1); } v[i] = false; } if(allNumber>count){ count = allNumber; } }