View Code of Problem 10

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[][] arr = new int[N][4];
		for(int i = 0; i < N; i ++) {
			for(int j = 0; j < 4; j ++) {
				arr[i][j] = sc.nextInt();
			}
		}
		for(int i = 0; i < N; i ++) {
			for(int j = 3; j > 0; j --) {
				if(arr[i][j] == arr[i][j - 1]) {
					arr[i][j] = arr[i][j] + arr[i][j - 1];
					arr[i][j - 1] = 0;
				}
			}
			for(int j = 3; j > 0; j --) {
				if(arr[i][j] == 0 && arr[i][j - 1] != 0) {
					arr[i][j] = arr[i][j - 1];
					arr[i][j - 1] = 0;
				}
			}
		}
		for(int i = 0; i < N; i ++) {
			for(int j = 0; j < 4; j ++) {
				if(j == 3) {
					System.out.println(arr[i][j]);
				} else {
					System.out.print(arr[i][j]  + " ");
				}
			}
		}
	}
}