Hi i wanted to know how to implement a checking system so that whenever my program randomizes a horse it will always be unique. Thanks!

import java.util.Scanner;
public class Horses
{
    public static void main(String args[])
    {
      String[][] horses = {{"Black ","White ","Gray ","Old ","Young ",
                             "Pink ","Yellow ","Brown ","Orange ","Cyan ", 
                             "Purple ","Tan ","Cerulean ","Silver ","Gold ", 
                             "Red ","Green ","Blue ","Maroon ","Marigold ", 
                             "Iron ","Paper ","Wood ","Zinc ","Metal "},
                             {"Stallion"}
                           };
                           
      boolean check9 = false;  
      String[][] horsePlace = {{pickRand.get(horses[0]), pickRand.get(horses[0]), pickRand.get(horses[0])
                              , pickRand.get(horses[0]), pickRand.get(horses[0]), pickRand.get(horses[0])}};
                                               
      String[][] horsePlace2 = {{pickRand.get(horses[0]), pickRand.get(horses[0]), pickRand.get(horses[0])
                              , pickRand.get(horses[0]), pickRand.get(horses[0]), pickRand.get(horses[0])}}; 
                               
      String[][] horsePlace3 = {{pickRand.get(horses[0]), pickRand.get(horses[0]), pickRand.get(horses[0])
                              , pickRand.get(horses[0]), pickRand.get(horses[0]), pickRand.get(horses[0])}};     
                               
      String[][] horsePlace4 = {{pickRand.get(horses[0]), pickRand.get(horses[0]), pickRand.get(horses[0])
                              , pickRand.get(horses[0]), pickRand.get(horses[0]), pickRand.get(horses[0])}};     
                               
      String[][] horsePlace5 = {{pickRand.get(horses[0]), pickRand.get(horses[0]), pickRand.get(horses[0])
                              , pickRand.get(horses[0]), pickRand.get(horses[0]), pickRand.get(horses[0])}};     
     
 
      String[][] Placement = {{"1. "},
                           {"2. "},
                           {"3. "},
                           {"4. "},
                           {"5. "}};
                           
      String[][] heat1 = {{Placement[0][0] + horsePlace[0][0] + horses[1][0]},
                         {Placement[1][0] + horsePlace[0][1] + horses[1][0]},
                         {Placement[2][0] + horsePlace[0][2] + horses[1][0]},
                         {Placement[3][0] + horsePlace[0][3] + horses[1][0]},
                         {Placement[4][0] + horsePlace[0][4] + horses[1][0]}};
      
      
      String[][] heat2 = {{Placement[0][0] + horsePlace2[0][0] + horses[1][0]},
                         {Placement[1][0] + horsePlace2[0][1] + horses[1][0]},
                         {Placement[2][0] + horsePlace2[0][2] + horses[1][0]},
                         {Placement[3][0] + horsePlace2[0][3] + horses[1][0]},
                         {Placement[4][0] + horsePlace2[0][4] + horses[1][0]}};
                         
      String[][] heat3 = {{Placement[0][0] + horsePlace3[0][0] + horses[1][0]},
                         {Placement[1][0] + horsePlace3[0][1] + horses[1][0]},
                         {Placement[2][0] + horsePlace3[0][2] + horses[1][0]},
                         {Placement[3][0] + horsePlace3[0][3] + horses[1][0]},
                         {Placement[4][0] + horsePlace3[0][4] + horses[1][0]}};
                         
      String[][] heat4 = {{Placement[0][0] + horsePlace4[0][0] + horses[1][0]},
                         {Placement[1][0] + horsePlace4[0][1] + horses[1][0]},
                         {Placement[2][0] + horsePlace4[0][2] + horses[1][0]},
                         {Placement[3][0] + horsePlace4[0][3] + horses[1][0]},
                         {Placement[4][0] + horsePlace4[0][4] + horses[1][0]}};
                         
      String[][] heat5 = {{Placement[0][0] + horsePlace5[0][0] + horses[1][0]},
                         {Placement[1][0] + horsePlace5[0][1] + horses[1][0]},
                         {Placement[2][0] + horsePlace5[0][2] + horses[1][0]},
                         {Placement[3][0] + horsePlace5[0][3] + horses[1][0]},
                         {Placement[4][0] + horsePlace5[0][4] + horses[1][0]}};      
                         
      String[][] heat6 = {{Placement[0][0] + horsePlace[0][0] + horses[1][0]},
                          {Placement[1][0] + horsePlace2[0][0] + horses[1][0]},
                          {Placement[2][0] + horsePlace3[0][0] + horses[1][0]},
                          {Placement[3][0] + horsePlace4[0][0] + horses[1][0]},
                          {Placement[4][0] + horsePlace5[0][0] + horses[1][0]}};

      String[][] heat7 = {{Placement[0][0] + horsePlace[0][1] + horses[1][0]},
                         {Placement[1][0] + horsePlace[0][2] + horses[1][0]},
                         {Placement[2][0] + horsePlace2[0][0] + horses[1][0]},
                         {Placement[3][0] + horsePlace3[0][0] + horses[1][0]},
                         {Placement[4][0] + horsePlace2[0][1] + horses[1][0]}};

since in your other thread, I gave you this as a suggestion, what have you tried so far?
and why did you start another thread? you could have asked issues about that in your other thread.

This article has been dead for over six months. Start a new discussion instead.