MomUtils

All Implemented Interfaces:
```
public class MomUtils

                    
```
MOM-specific utility functions for combinatorial operations Complements the existing jline.util.Maths class

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description

Field Summary

Fields
Modifier and Type	Field	Description
`public final static MomUtils`	`INSTANCE`

Constructor Summary

Constructors
Constructor	Description

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`final Array<IntArray>`	`sortByNnzPos(Array<IntArray> combinations)`	Sort combinations by number of non-zeros and their positions This is used to optimize the order of processing in the solver
`final Integer`	`countNonZeros(IntArray array)`	Count non-zero elements in an array
`final Integer`	`hashPop(IntArray population, IntArray maxPop)`	Hash a population vector to a unique index This is used for efficient lookup of population states

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

- Constructor Detail
- Method Detail
  - sortByNnzPos
```
 final Array<IntArray> sortByNnzPos(Array<IntArray> combinations)
```
    Sort combinations by number of non-zeros and their positions This is used to optimize the order of processing in the solver
    
    Parameters:
    
    combinations - Array of combinations to sort
    
    Returns:
    
    Sorted array of combinations
  - countNonZeros
```
 final Integer countNonZeros(IntArray array)
```
    Count non-zero elements in an array
    
    Parameters:
    
    array - The array to count non-zeros in
    
    Returns:
    
    Number of non-zero elements
  - hashPop
```
 final Integer hashPop(IntArray population, IntArray maxPop)
```
    Hash a population vector to a unique index This is used for efficient lookup of population states
    
    Parameters:
    
    population - The population vector
    
    maxPop - Maximum population per class (for hash calculation)
    
    Returns:
    
    Hash index