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;

public class BubbleSort {

    const int MIN_N = 1;
    const int MAX_N = 100;
    const int MIN_A = 0;
    const int MAX_A = 100;

    int N = 0;
    
    BubbleSort() {
	// ?????????????????°???????????????????????????
	N = int.Parse(Console.ReadLine());

	// ?????????????????§??????
	N = Math.Min(N, MAX_N);
	N = Math.Max(N, MIN_N);

	// ?????????????????°??????????????????
	string[] buf = Console.ReadLine().Split(' ');
	int[] input  = new int[N];
	for (int i = 0; i < N; i++) {
	    input[i] = int.Parse(buf[i]);
	}

	// ???????????????????????¢?????´?????????
	bool flag = true; // ????????£??\????´?????????¨??????
	int change = 0; // ???????????°
	while (flag) {
	    flag = false;
	    for (int j = N - 1; 1 <= j; j--) {
		if (input[j] < input[j - 1]) {
		    // ????????????
		    int tmp = input[j];
		    input[j] = input[j - 1];
		    input[j - 1] = tmp;
		    change++;
		    flag = true;
		}
	    }
	}

	// ??????
	for (int i = 0; i < N; i++) {
	    if (i == N - 1) {
		Console.WriteLine(input[i]);
		Console.WriteLine(change); // ???????????°
		continue;
	    }
	    Console.Write(input[i] + " ");
	}	
    }

    public static void Main() {
	//BubbleSort sort = new BubbleSort();
	new BubbleSort();
    }
}