在java中如何用逗号分隔我的输出

Question

我做了这个程序来计算一组数字

public void himpunanIrisan(){
     System.out.print("The Result is  {");
     for(int k=1; k<=setofB; k++){
         boolean Sama = false;
         for(int i=1; i<=setofA; i++){
             if(numberB[k] == numberA[i]){
                 Sama = true;
             }
         } if (Sama==true){
             System.out.print(numberB[k]+ ",");
     }
     } System.out.println("}");
 }

输出如下所示

The Result is {1,2,}

有什么办法可以让另一个逗号分开吗？

Answer 1

我假设您只是一个初学者，并试图学习，这就是为什么我试图使用基本级别的解决方案。

    public void himpunanIrisan(){
        int[] numberB = {0,1,2,3,4};
        int setofB = numberB.length-1;
        int[] numberA = {0,1,2,5,6};
        int setofA = numberA.length-1;
        StringBuilder stringBuilder = new StringBuilder();
        stringBuilder.append("The Result is  {");
        boolean initParam = true;
        for(int k=1; k<=setofB; k++){
            boolean Sama = false;
            for(int i=1; i<=setofA; i++){
                if(numberB[k] == numberA[i]){
                    Sama = true;
                }
            } if (Sama && initParam){
                initParam = false;
                stringBuilder.append(numberB[k]);
            } else if(Sama) {
                stringBuilder.append(",");
                stringBuilder.append(numberB[k]);
            }
        }
        stringBuilder.append("}");
        System.out.println(stringBuilder);
    }
}

结果是{1,2}