UrnModel

java.lang.Object
- pal.math.UrnModel

All Implemented Interfaces:

java.io.Serializable
```
public class UrnModel
extends java.lang.Object
implements java.io.Serializable
```
class for drawing numbers from an urn with and without laying back

Version:

$Id: UrnModel.java,v 1.4 2001/07/13 14:39:13 korbinian Exp $

Author:

Korbinian Strimmer

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

UrnModel(int n)
create urn model

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`drawDontPutBack()`	draw a number without putting back
`int`	`drawPutBack()`	draws a number with putting back
`void`	`reset()`	refill urn

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 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)