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.Scanner;

/**
 * Created by ??\??? on 2016/12/6.
 */
public class Main {
    static int si(String s) {
        return Integer.parseInt(s);
    }
    static int run(String[] args){
        Scanner scan = new Scanner(System.in);
        while(scan.hasNext()) {
            int T = Integer.parseInt(scan.nextLine());
            String[] lines = scan.nextLine().split(" ");
            int sum = 0;
            for(int i = 0;i<lines.length-1;i++){
                for(int j = lines.length - 1;j>=i+1;j--){
                    if(si(lines[j])<si(lines[j-1])){
                        String s = lines[j];
                        lines[j] = lines[j-1];
                        lines[j-1] = s;
                        sum++;
                    }
                }
            }
            for(int i = 0;i<lines.length;i++){
                if(i==0)
                    System.out.print(lines[0]);
                else
                    System.out.print(" "+lines[i]);
            }
            System.out.println();
            System.out.println(sum);

        }
        return 1;
    }

    public static void main(String[] args) {
        run(args);
    }
}