  1  import java.util.Random;

  3  /**

  4     This class contains utility methods for array manipulation.

  5  */

  6  public class ArrayUtil

  7  {

  8     private static Random generator = new Random();

 10     /**

 11        Creates an array filled with random values.

 12        @param length the length of the array

 13        @param n the number of possible random values

 14        @return an array filled with length numbers between

 15        0 and n - 1

 16     */

 17     public static int[] randomIntArray(int length, int n)

 18     {

 19        int[] a = new int[length];

 20        for (int i = 0; i < a.length; i++)

 21           a[i] = generator.nextInt(n);

 23        return a;

 24     }

 25  }