IntTuples

java.lang.Object
- cc.redberry.combinatorics.IntTuples

All Implemented Interfaces:

IntCombinatorialPort, java.io.Serializable
```
public final class IntTuples
extends java.lang.Object
implements IntCombinatorialPort
```
Iterator over all N-tuples (not necessary to be distinct), which can be chosen from N arrays of integers of the form array_i = [0, 1, 2, ..., K_i].
For example, if a set of arrays length is {K_i} = [2,3,2], then the following tuples will be produced arr lastUpdateDepth [0, 0, 0] 0 [0, 0, 1] 2 [0, 1, 0] 1 [0, 1, 1] 2 [0, 2, 0] 1 [0, 2, 1] 2 [1, 0, 0] 0 [1, 0, 1] 2 [1, 1, 0] 1 [1, 1, 1] 2 [1, 2, 0] 1 [1, 2, 1] 2
Calculation of the next tuple occurs only on the invocation of take().
Note: method take() returns the same reference on each invocation.
Since:

1.0

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from interface cc.redberry.combinatorics.IntCombinatorialPort
  IntCombinatorialPort.Iterator

Field Summary

Fields
Modifier and Type Field Description

private int[] current

private int lastUpdateDepth

private static long serialVersionUID

private int[] upperBounds

Constructor Summary

Constructors
Constructor Description

IntTuples(int... upperBounds)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`private static void`	`checkWithException(int[] upperBounds)`
`int`	`getLastUpdateDepth()`
`int[]`	`getReference()`	Returns the reference to the current iteration element
`void`	`reset()`	Resets the iteration
`int[]`	`take()`	Calculates and returns the next combination or null, if no more combinations exist.

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

- Field Detail
  - serialVersionUID
```
private static final long serialVersionUID
```
    See Also:
    
    Constant Field Values
  - upperBounds
```
private final int[] upperBounds
```
  - current
```
private int[] current
```
  - lastUpdateDepth
```
private int lastUpdateDepth
```
- Constructor Detail
  - IntTuples
```
public IntTuples(int... upperBounds)
```
- Method Detail
  - checkWithException
```
private static void checkWithException(int[] upperBounds)
```
  - take
```
public int[] take()
```
    Description copied from interface: IntCombinatorialPort
    
    Calculates and returns the next combination or null, if no more combinations exist.
    
    Specified by:
    
    take in interface IntCombinatorialPort
    
    Returns:
    
    the next combination or null, if no more combinations exist
  - getLastUpdateDepth
```
public int getLastUpdateDepth()
```
  - reset
```
public void reset()
```
    Resets the iteration
    
    Specified by:
    
    reset in interface IntCombinatorialPort
  - getReference
```
public int[] getReference()
```
    Description copied from interface: IntCombinatorialPort
    
    Returns the reference to the current iteration element
    
    Specified by:
    
    getReference in interface IntCombinatorialPort
    
    Returns:
    
    the reference to the current iteration element