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){
        Scanner sc = new Scanner(System.in);

        int n = Integer.parseInt(sc.next());

        List<Integer> list = new ArrayList<>();
        for(int i=0; i<n; i++){
            list.add(Integer.parseInt(sc.next()));
        }
        
        int count=0;
        int flag=1;
        int i=0;
        
        while(flag==1){
            flag = 0;
            for(int j = n-1; j>=i+1; j--){
                if(list.get(j) < list.get(j-1)){
                    int temp1=list.get(j);
                    int temp2=list.get(j-1);
                    list.set(j,temp2);
                    list.set(j-1,temp1);
                    flag=1;
                    count++;
                }
            }
            i++;
        }
        
        //output
        StringBuilder sb = new StringBuilder();
        for(Integer output:list){
            sb.append(output).append(" ");
        }
        sb.deleteCharAt(sb.length()-1);
        sb.append("\n").append(count);
        System.out.println(sb);
    }
}