Java中动态输入一组数，存到数组里面，利用四种循环打印出数组的所有元素。

动态输入元素，存入数组

    Scanner sc = new Scanner(System.in);
        int[] arr =new int[5];
        for (int i = 0; i <5 ; i++) {
            System.out.println("请输入第"+(i+1)+"个数：");
            arr[i]= sc.nextInt();
        }
        System.out.println();

1.for循环

        for (int i = 0; i < 5; i++) {
            System.out.print(arr[i]+"\t");
        }

2.foreach循环

       for (int a:arr
             ) {
            System.out.print(a+"\t");
        }

3.while循环

        int i=0;
        while (i<arr.length){
            System.out.print(arr[i]+"\t");
            i++;
        }

4.do…while循环

       int j=0;
        do{
            System.out.print(arr[j]+"\t");
            j++;
        }while (j<arr.length);