View Code of Problem 10

import java.util.Scanner;


public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();
        for (int i = 0; i < N; i++) {
            int a[] = new int[4];
            for (int j = 0; j < 4; j++) {
                a[j] = scanner.nextInt();
            }
            move(a);
            for (int j = 3; j >=1; j--) {
                if (a[j]==a[j-1]){
                    a[j]=a[j]*2;
                    a[j-1]=0;
                    move(a);
                }
            }
            for (int j = 0; j <3; j++) {
                System.out.print(a[j]+" ");
            }
            System.out.println(a[3]);
        }
    }
    public static void move(int a[]){
        int index=a.length-1;
        for (int i = a.length-1; i >=0; i--) {
            if (a[i]!=0){
                int temp = a[i];
                a[i]=0;
                a[index] = temp;
                index--;
            }
        }
    }
}