Намекните в чем траблы???
package com.javarush.task.task07.task0705;
import java.util.Scanner;
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class Solution {
public static void main(String[] args) throws Exception {
int [] number = new int [20];
Scanner c = new Scanner(System.in);
for (int i = 0; i < 20; i++){
number[i] = c.nextInt();}
int [] small1 = new int [10];
int [] small2 = new int [10];
for (int i=0; i<20; i++){
System.arraycopy(number,0,small1,0,9);
System.arraycopy(number,10,small2,0,10);
System.out.println(small2[i]); }//напишите тут ваш код
}
}