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]}};