Solved Randomizing Teams

Hey Bukkit in this piece of code im trying to randomize some teams, but it gives an error when the second player it's chosen

Line 491 = "String pls = in_lobby.get(x);"

Code:

Code:java

 Random r = new Random();
 
int total = in_lobby.size();
 
for(int i = 0; i < total; i++){
 
int x = r.nextInt(total);
 
String pls = in_lobby.get(x);
 
Player pl = Bukkit.getPlayer(pls);
 
if(red_team.size() > blue_team.size()){
if(blue_team.contains(pl.getName()) || red_team.contains(pl.getName())){
blue_team.add(pl.getName());
in_lobby.remove(pl.getName());
pl.sendMessage("You are in a team. BLUE");
}
}
else if(blue_team.size() > red_team.size()){
if(blue_team.contains(pl.getName()) || red_team.contains(pl.getName())){
red_team.add(pl.getName());
in_lobby.remove(pl.getName());
pl.sendMessage("You are in a team. RED");
}
}
else if(blue_team.size() == 0 && red_team.size() == 0){
red_team.add(pl.getName());
in_lobby.remove(pl.getName());
pl.sendMessage("You are the first");
}
}

Code:

n
java.lang.IndexOutOfBoundsException: Index: 1, Size: 1
        at java.util.ArrayList.rangeCheck(ArrayList.java:604)
        at java.util.ArrayList.get(ArrayList.java:382)
        at me.bugsyftw.pb.Game.randomizeTeams(Game.java:491)
        at me.bugsyftw.pb.Game.sortTeams(Game.java:520)
        at me.bugsyftw.pb.Game$2.run(Game.java:474)
        at org.bukkit.craftbukkit.v1_6_R2.scheduler.CraftTask.run(CraftTask.java:53)
        at org.bukkit.craftbukkit.v1_6_R2.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.jav$
        at net.minecraft.server.v1_6_R2.MinecraftServer.t(MinecraftServer.java:522)
        at net.minecraft.server.v1_6_R2.DedicatedServer.t(DedicatedServer.java:226)
        at net.minecraft.server.v1_6_R2.MinecraftServer.s(MinecraftServer.java:486)
        at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:419)
        at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)

 

1. String pls = in_lobby.get(x-1);
   Try that?

 

The problem is causes by the removal of contents in in_lobby while looping through it. I would suggest completely rewriting the algorithm using the list's sublist method on a randomly shuffled in_lobby (should be faster and cause much less problems). This question on stackoverflow should give you the idea.

 

TheE Thanks, i've tried using shuffle but i do not know how to use or list sublist, i'll try and find out, Thanks for the help