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.IO;
using System.Reflection;
using System.Collections.Generic;
using System.Text;
using System.Linq;

namespace AOJ
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            string[] str = Console.ReadLine().Split(' ');
            int[] sortArray = str.Select(s => int.Parse(s)).ToArray();
            int executeNum = 0;

            for(int i = 0;i < n-1; ++i)
            {
                for(int j = n-1;j > i; --j)
                {
                    if(sortArray[j] < sortArray[j-1])
                    {
                        Program.swap(ref sortArray[j], ref sortArray[j - 1]);
                        ++executeNum;
                    }
                }
            }
            for(int i = 0; i < n; ++i)
            {
                Console.Write(sortArray[i]);
                if(i != n - 1)
                {
                    Console.Write(" ");
                }
            }
            Console.Write("\n");
            Console.WriteLine(executeNum);
        }
        public static void swap(ref int x ,ref int y)
        {
            int temp = x;
            x = y;
            y = temp;
        }
    }
}