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 C# (judge verdict: Accepted)

using System;
using System.Collections.Generic;
using System.Text;
 
class Program
{
    public void Proc()
    {
        int itemCount = int.Parse(Console.ReadLine());
        string[] inpt = Console.ReadLine().Split(' ');
        int[] numList = new int[itemCount];
 
        for(int i=0; i<inpt.Length; i++)
        {
            numList[i] = int.Parse(inpt[i]);
        }
        // ??????????????????
        int left = 0;
        int convCount = 0;
         
        while(true)
        {
            bool isMatch = false;
            for(int i=numList.Length -2; i>=left; i--)
            {
                if(numList[i] > numList[i+1])
                {
                    int v = numList[i];
                    numList[i] = numList[i + 1];
                    numList[i + 1] = v;
                    convCount++;
                    isMatch = true;
                    if(i==left)
                    {
                        left++;
                    }
                }
            }
            if(!isMatch)
            {
                break;
            }
        }
        StringBuilder ans = new StringBuilder();
        for(int i=0; i<numList.Length; i++)
        {
            if(ans.Length > 0)
            {
                ans.Append(" ");
            }
            ans.Append(numList[i]);
        }
 
        Console.WriteLine(ans.ToString());
        Console.WriteLine(convCount);
    }
 
 
    static void Main(string[] args)
 
    {
 
        Program prg = new Program();
        prg.Proc();
 
    }
}