public static T[][] GetSimpleCombinations <T>(this ICollection <T> collection, int numberOfElementsPerCombination)
{
T[][] result = new T[NumberOfSimpleCombinations(numberOfElementsPerCombination, collection)][];
int index = 0;
Loops.ForCombo <T>(numberOfElementsPerCombination, collection,
(T[] a) => { result[index] = a; index++; }, false, false);
return(result);
}
public static T[][] GetPermutationsWithReplacement <T>(this ICollection <T> collection, int numberOfElementsPerCombination)
{
T[][] result = new T[NumberOfPermutationsWithReplacement <T>(numberOfElementsPerCombination, collection)][];
int index = 0;
Loops.ForCombo <T>(numberOfElementsPerCombination, collection,
(T[] a) => { result[index] = a; index++; }, false, true);
return(result);
}