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.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {

	public static void main (String[] args) throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int n = Integer.parseInt(br.readLine());
		int[] a = new int[n];
		String[] elements = br.readLine().split(" ");
		
		for (int i = 0; i < n; i++){
			a[i] = Integer.parseInt(elements[i]);
		}
		
		int swap = 0;
		
		for (int i = 0; i < a.length - 1; i++){
			for(int j = a.length - 1; j >= i + 1; j--){
				if(a[j] < a[j-1]){
					int v = a[j-1];
					a[j-1] = a[j];
					a[j] = v;
					swap++;
				}
			}
		}
		
		System.out.print(a[0]);	
		if(n > 1){
			for (int i = 1; i < a.length; i++) {
				System.out.print(" " + a[i]);
			}
		}
		System.out.println();
		System.out.println(swap);
	}
}