Constructor Detail

• UrnModel

  public UrnModel(int n)

  create urn model

  Parameters:

  n - capacity (corresponding to numbers 0..n-1)

Method Detail

• drawDontPutBack

  public int drawDontPutBack()

  draw a number without putting back

  Returns:

  number drawn (random integer between 0..n-1, if empty return -1)

• reset

  public void reset()

  refill urn

• drawPutBack

  public int drawPutBack()

  draws a number with putting back

  Returns:

  number drawn (random integer between 0..n-1, if empty return -1)