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 {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] a = new int[n];
        int ans = 0;
        for(int i = 0; i < n; i++){
            a[i] = sc.nextInt();
        }
        boolean flag = true;
        while(flag){
            flag = false;
            for(int j = n-1; j > 0; j--){
                if(a[j] < a[j-1]){
                    int work = a[j];
                    a[j] = a[j-1];
                    a[j-1] = work;
                    ans ++;
                    flag =true;
                }
            }
        }
        for(int i = 0; i < n-1; i++){
            System.out.print(a[i] + " ");
        }
        System.out.println(a[n-1]);
        System.out.println(ans);
    }
}