In a method, how do I change the values of an existing array and set each of the array variables to a random number between 1 - 100?

Question

Here is what I have so far:

   public class Player {

    private String playerName;
    private double playerScore;

    public Player(String name){
       playerName = name;

    }

    public String getName() {
        return playerName;
    }
    public void setName(String name){
        playerName = name;
    }

    public double getScore(){
        return playerScore;
    }

    public void setScore(double name){
        playerScore = name;
    }
public static void playerArray(ArrayList<Player> arrayPlayerScores){

    for (int i = 0; i < Player.length; i++){

    }


}

I am trying to write a Java method that takes an ArrayList of Player objects (from above) and sets each of the Player score instance variables to a random value between 1 and 100

You've tried literally nothing. You should start by trying the approach for this if it weren't in a method... — nhgrif, Dec 12 '13 at 03:04

score 0 · Answer 1 · answered Dec 12 '13 at 03:10

0

for(Player p: arrayPlayerScores){
    p.setScore(Math.random()*100);
}

answered Dec 12 '13 at 03:10

user3093701

1

whoever you are , you do not help this person because you did his homwork for him , and it is not good – Kick Buttowski Dec 12 '13 at 03:12

score 0 · Answer 2 · edited May 23 '17 at 11:49

You have an ArrayList (not an Array). First, I would add a class level field of type Random.

private static final Random random = new Random(
    System.currentTimeMillis()); // <-- Like this (maybe).

Second, I would use a for-each loop to iterate a List named players (not an ArrayList called arrayPlayerScores).

public static void playerArray(List<Player> players) { // <-- like this (maybe).
  for (Player p : players) { // <-- a for-each
    p.setScore(newScore);    // <-- replace newScore with an appropriate call 
                             //     to random (remember, to add 1 to get the range 1
                             //     n).
  }
}

how did you come up with newScore ? – Kick Buttowski Dec 12 '13 at 03:26 — Kick Buttowski, Dec 12 '13 at 03:26

In a method, how do I change the values of an existing array and set each of the array variables to a random number between 1 - 100?

2 Answers2