August 29, 2008 02:59pm pdt

1. CEHJ 1,079,478
2. objects 626,949
3. cmalakar 241,394
4. ksivananth 185,747
5. sciuriware 175,327
6. MicheleM... 129,415
7. Bart_Cr 124,374
8. ysnky 95,336
9. contactka... 92,088
10. krakatoa 91,750
11. Ajay-Singh 59,147
12. girionis 53,165
13. dejanpazin 49,550
14. aiklamha 48,300
15. rrz@87... 42,240
16. mbodewes 40,444
17. humanono... 35,712
18. ADSLMark 34,393
19. shivaspk 34,258
20. spoxox 26,705
21. melchkish... 26,025
22. SprudeVI 25,572
23. brunoguim... 24,825
24. mrcoffee... 24,710
25. malfunctio... 23,650

1. objects 9,739,715
2. CEHJ 8,230,381
3. zzynx 1,579,050
4. mayankea... 1,430,508
5. TimYates 1,313,543
6. girionis 1,015,037
7. sciuriware 910,559
8. Ajay-Singh 723,946
9. ksivananth 539,423
10. heyhey_ 515,764
11. aozarov 483,814
12. Javatm 456,951
13. jim_cakalic 420,656
14. orangehe... 393,681
15. hoomanv 378,789
16. Webstorm 359,422
17. sudhakar... 349,968
18. bloodredsun 321,737
19. StillUnAw... 300,197
20. suprapto45 291,202
21. Giant2 287,095
22. petmagdy 284,638
23. cmalakar 262,846
24. contactka... 220,253
25. jimmack 218,064

06.26.2008 at 06:40AM PDT, ID: 23518066 | Points: 250

	[x] Attachment Details

Math Random Question

Asked by simple21 in Java Programming Language, Java Standard Edition

Hi Experts,

I create a program which needs to loop depending on the number of given players. After each loop I need to distribute random players to the total number of users. Each user should not have any repeating player after the whole loop.

Example: Players 3 (Player-A, Player-B, Player-C)

Loop1:
User1: Player-A
User2: Player-B
User3: Player-C

Loop2:
User1: Player-B
User2: Player-C
User3: Player-A

Loop3:
User1: Player-C
User2: Player-A
User3: Player-B

I created a code but it seems to repeat players on the last user, Can someone help below is the code:Start Free Trial

         
           
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             import java.util.ArrayList;
 
 
public class Randomizer {
 
	private static String players [] = {
		"Nadal",
		"Roddick",
		"Monfils",
		"Ancic",
		"Henman",
		"Ferrero",
		"Blake",
		"Grosjean",
		"Nalbandian", 
		"Haas",
		"Hewitt",
		"Dent"
	};
 
	private static String users [] = {
		"User1",
		"User2",
		"User3",
		"User4",
		"User5",
		"User6",
		"User7",
		"User8",
	};
	
	public Randomizer() {
		ArrayList old_record = new ArrayList();
		
		for (int x=1; x<=12; x++) {
			System.out.println("\nResult: " + x + "\n");
			ArrayList list = new ArrayList();
			for (int y=0; y<users.length; y++) {
				
				String player = getPlayer();
				if (!old_record.contains(users[y] + player)) {
					if (!list.contains(player)) {
						list.add(player);
						old_record.add(users[y] + player);
						System.out.println(users[y] + "\t\t| " + player);
					} else {
						while(list.contains(player)) {
							player = getPlayer();
							if (!list.contains(player)) {
								list.add(player);
								old_record.add(users[y] + player);
								System.out.println(users[y] + "\t\t| " + player);
								break;
							}	 
						}
					}
				} else {
					while(old_record.contains(users[y] + player)) {
						player = getPlayer();
						if (!old_record.contains(users[y] + player)) {
							if (!list.contains(player)) {
								list.add(player);
								old_record.add(users[y] + player);
								System.out.println(users[y] + "\t\t| " + player);
							} else {
								while(list.contains(player)) {
									player = getPlayer();
									if (!list.contains(player)) {
										list.add(player);
										old_record.add(users[y] + player);
										System.out.println(users[y] + "\t\t| " + player);
										break;
									}	
								}
							}
							break;
						}
					}
				}
			}
		}
		
	}
	
	private String getPlayer() {
		int random_number = (int)(Math.random() * players.length);
		return players[random_number];
	}
	
	public static void main(String[] args) {
		new Randomizer();
	}
}

           
         

Keywords: Math Random Question

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