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;

public class Main {
	public static void main(String args[]) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] a = new int[n];

		for (int i = 0; i < n; i++) {
			a[i] = sc.nextInt();
		}

		boolean flag = true;
		int cnt = 0;
		while (flag) {
			flag = false;
			for (int j = n - 1; j >= 1; j--) {
				if (a[j] < a[j - 1]) {
					int tmp = a[j];
					a[j] = a[j - 1];
					a[j - 1] = tmp;
					cnt++;
					flag = true;
				}
			}
		}

		StringBuilder sb = new StringBuilder();
		for (int i : a) {
			sb.append(i);
			sb.append(" ");
		}

		System.out.println(sb.toString().trim());
		System.out.println(cnt);
	}
}