Problem:
Bubble Sort

Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:

BubbleSort(A)
1 for i = 0 to A.length-1
2 for j = A.length-1 downto i+1
3 if A[j] < A[j-1]
4 swap A[j] and A[j-1]

Note that, indices for array elements are based on 0-origin.

Your program should also print the number of swap operations defined in line 4 of the pseudocode.

Input

The first line of the input includes an integer N, the number of elements in the sequence.

In the second line, N elements of the sequence are given separated by spaces characters.

Output

The output consists of 2 lines.

In the first line, please print the sorted sequence. Two contiguous elements of the sequence should be separated by a space character.

In the second line, please print the number of swap operations.

Constraints

1 ≤ N ≤ 100

Sample Input 1

5
5 3 2 4 1

Sample Output 1

1 2 3 4 5
8

Sample Input 2

6
5 2 4 6 1 3

Sample Output 2

1 2 3 4 5 6
9

Solution in JAVA (judge verdict: Accepted)

import java.util.Scanner;

/**
 * 
 */

/**
 * @author kawakami
 *
 */
class Main {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		StringBuilder sb = new StringBuilder();
		Scanner as = new Scanner(System.in);
		
		int N = 0;
		int tre = 0;
		int count = 0;
		int A[];
		
		Boolean flag = true;
		
		N = Integer.parseInt(as.next());
		
		A = new int[N];
		
		for(int i=0;i<N;i++){
			
			A[i] = Integer.parseInt(as.next());
			
		}
		
		while(flag){
			
			flag = false;
			for(int j=N-1;j>=1;j--){
				
				if(A[j] < A[j-1]){
					
					tre = A[j];
					A[j] = A[j-1];
					A[j-1] = tre;
					flag = true;
					count++;
					
				}
				
			}
			
		}
		
		for(int i=0;i<N;i++){
			
			if(i != N-1){
				
				sb.append(A[i]).append(' ');
			
			}
			else{
				
				sb.append(A[i]);
				
			}
		}
		System.out.println(sb.toString());
		sb.setLength(0);
		sb.append(count);
		System.out.println(sb.toString());

	}

}