package aima.agents;
import java.util.Random;

public class AIMA {

  static Random seed = new Random();

  static Object randomChoice(Object[] choices) {
    return choices[randomInt(choices.length)];
  }

  static Object randomChoice(Object x, Object y) {
    return randomInt(2) == 1 ? x : y;
  }
  
  static Object randomChoice(Object x, Object y, Object z) {
    switch (randomInt(3)) { 
      case 0: return x;
      case 1: return y;
      case 2: return z;
    }
    return x; // Shouldn't ever happen
  }

  static int randomInt(int n) {
    return Math.abs(seed.nextInt() % n);
  }
  
  static float random() { return seed.nextFloat(); }
  
  static Object newOne(Object x) {
    try {
      return x.getClass().newInstance();
    } catch (Exception e) {
      return null;
    }
  }
  }