Problem:
Stable Sort

Let's arrange a deck of cards. There are totally 36 cards of 4 suits(S, H, C, D) and 9 values (1, 2, ... 9). For example, 'eight of heart' is represented by H8 and 'one of diamonds' is represented by D1.

Your task is to write a program which sorts a given set of cards in ascending order by their values using the Bubble Sort algorithms and the Selection Sort algorithm respectively. These algorithms should be based on the following pseudocode:

BubbleSort(C)
1 for i = 0 to C.length-1
2 for j = C.length-1 downto i+1
3 if C[j].value < C[j-1].value
4 swap C[j] and C[j-1]

SelectionSort(C)
1 for i = 0 to C.length-1
2 mini = i
3 for j = i to C.length-1
4 if C[j].value < C[mini].value
5 mini = j
6 swap C[i] and C[mini]

Note that, indices for array elements are based on 0-origin.

For each algorithm, report the stability of the output for the given input (instance). Here, 'stability of the output' means that: cards with the same value appear in the output in the same order as they do in the input (instance).

Input

The first line contains an integer N, the number of cards.

N cards are given in the following line. Each card is represented by two characters. Two consecutive cards are separated by a space character.

Output

In the first line, print the arranged cards provided by the Bubble Sort algorithm. Two consecutive cards should be separated by a space character.

In the second line, print the stability ("Stable" or "Not stable") of this output.

In the third line, print the arranged cards provided by the Selection Sort algorithm. Two consecutive cards should be separated by a space character.

In the fourth line, print the stability ("Stable" or "Not stable") of this output.

Constraints

1 ≤ N ≤ 36

Sample Input 1

5
H4 C9 S4 D2 C3

Sample Output 1

D2 C3 H4 S4 C9
Stable
D2 C3 S4 H4 C9
Not stable

Sample Input 2

2
S1 H1

Sample Output 2

S1 H1
Stable
S1 H1
Stable

Solution in JAVA (judge verdict: WA: Presentation Error)


import java.util.Scanner;

public class Main {
	public static int count = 0;
	
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		int length = scanner.nextInt();
		
		Card[] array = new Card[length];
		
		for (int i=0; i<length; i++) {
			char[] temp = scanner.next("[SHCD][0-9]").toCharArray();
			array[i] = new Card(temp[0], Character.getNumericValue(temp[1]));
		}
		scanner.close();
		
		Card[] orgArray = array.clone();
		Card[] array2 = array.clone();
		
		bubbleSort(array, length);
		printArray(array);
		System.out.print(compareArray(orgArray, array)+'\n');
		
		selectionSort(array2, length);
		printArray(array2);
		System.out.print(compareArray(orgArray, array2));

		
	}
	
	public static void selectionSort(Card[] array, int length) {
		// Variable i stands for the smallest value at this moment.
		// j to traverse the remain items, identify the position of the smallest value in the remain queue.
		for (int i=0; i<length; i++) {
			int mini = i;
			for (int j=i+1; j<length; j++) {
				if (array[j].getValue() < array[mini].getValue()) {
					mini = j;
				}
			}
			// Swap mini and i if mini!=i
			if (mini != i) {
				Card tmpCard = array[mini];
				array[mini] = array[i];
				array[i] = tmpCard;
				count++;
			}
		}
	}
	
	public static void bubbleSort(Card[] array, int length) {
		// Variable i stands for the smallest value at this moment.
		// j to traverse the remain items, smallest bubbled to the position i.
		for (int i=0; i<length; i++) {
			for (int j=length-1; j>i; j--) {
				if (array[j].getValue() < array[j-1].getValue()) {
					// Switch the value of array[j] and array[j-1]
					Card tmpCard = array[j];
					array[j] = array[j-1];
					array[j-1] = tmpCard;
					count++;
				}
			}
		}
	}
	
	public static void printArray(Card[] array) {
		for (int i = 0; i < array.length; i++) {
			if (i>0) System.out.print(" ");
			System.out.print(array[i]);
		}
		System.out.print("\n");
	}
	
	public static String compareArray(Card[] org, Card[] sorted) {
		int length = org.length;
		for (int i=0; i<length; i++) {
			for (int j=i+1; j<length; j++) {
				for (int a=0; a<length; a++) {
					for (int b=a+1; b<length; b++) {
						if (org[i].getValue()==org[j].getValue() 
								&& sorted[a].getValue()==sorted[b].getValue() 
								&& org[i].getValue()==sorted[b].getValue() 
								&& org[i].getSuit()==sorted[b].getSuit() 
								&& org[j].getSuit()==sorted[a].getSuit())
							return "Not stable";
					}
				}
			}
		}
		return "Stable";
	}
	
}

class Card {
	private char suit;
	private int value;
	
	public Card(char suit, int value) {
		this.suit = suit;
		this.value = value;
	}
	
	public char getSuit() {
		return suit;
	}
	
	public int getValue() {
		return value;
	}
	
	public void setSuit(char suit) {
		this.suit = suit;
	}
	
	public void setValue(int value) {
		this.value = value;
	}
	
	@Override
	public String toString() {
		return "" + this.suit + this.value;
	}
}