UVA 229 Java

import java.util.*;
import static java.lang.System.*;

public class main{
  public static void main(String[] args) {
    Scanner sc=new Scanner(System.in);
    int cases = sc.nextInt();
    for(int t = 0; t < cases; t++)
    {
    	int n = sc.nextInt();
    	int[] datas = new int[n];
    	for(int i = 0; i < n; i++)
    		datas[i] = sc.nextInt();
    	int count = 0;
    	for(int i = 0; i < n-1; i++)
    		for(int j = 0; j < n-1; j++)
    		{
    			if(datas[j] > datas[j+1])
    			{
    				int temp = datas[j+1];
    				datas[j+1] = datas[j];
    				datas[j] = temp;
    				count++;
    			}
    		}
    	System.out.printf("Optimal train swapping takes %d swaps.\r\n", count);
    }
  }
};