class ArrayCoba{

    static void reverse(int a[], int n){
        int[] b = new int[n];
        int j = n;
        for (int i = 0; i<n; i++){
            b[j -1 ] = a [i];
            j = j - 1;
        }

        System.out.println("Reverse Array: ");
        System.out.print("[");
        for (int k = 0; k < n; k++){
            System.out.print(b[k]);
            System.out.print(", ");
        }
        System.out.print("]");
    }

    public static void main (String[] args){

        int [] arrayKu = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 ,12 ,13 ,14, 15, 16, 17, 18, 19, 20};
        System.out.println("Array Indeks ke 15 ");
        System.out.println(arrayKu[15]);
        System.out.println(" ");
        System.out.println("Sum Array ke 5 dan Array ke 10");
        int SumArray = 0;
        SumArray = arrayKu[5] + arrayKu[10];
        System.out.println(SumArray);
        System.out.println(" ");
        reverse (arrayKu, arrayKu.length);

    }
}