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.*;

public class Main {
	
	int count = 0;
	
	void bubbleSort(int[] A) {
		boolean f = true;
		while (f) {
			f = false;
			for (int i = A.length - 1; i >= 1; i--) {
				if (A[i] < A[i-1]) {
					int tmp = A[i];
					A[i] = A[i-1];
					A[i-1] = tmp;
					f = true;
					count++;
				}
			}
		}
	}

	void run() {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		int[] A = new int[n];
		for (int i = 0; i < A.length; i++) {
			A[i] = scan.nextInt();
		}
		count = 0;
		bubbleSort(A);
		System.out.print(A[0]);
		for (int i = 1; i < A.length; i++) {
			System.out.print(" " + A[i]);
		}
		System.out.println();
		System.out.println(count);
	}
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new Main().run();
	}

}