public static IEnumerable <IEnumerable <int> > ChooseStringIndeces(int indecesToReplace, int stringStartLength)
{
var key = new IndexDictionaryKey(indecesToReplace, stringStartLength);
if (IndexDictionary.ContainsKey(key))
{
return(IndexDictionary[key]);
}
var indexCombination = new List <string>();
for (int i = 0; i < stringStartLength; i++)
{
indexCombination.Add(i.ToString());
}
var combinations = new List <string>();
Choose("", indecesToReplace, indexCombination, combinations);
var value = combinations.Select(i => i.Select(c => Int32.Parse(c.ToString())));
IndexDictionary.Add(key, value);
return(value);
}
public static IEnumerable<IEnumerable<int>> ChooseStringIndeces(int indecesToReplace, int stringStartLength)
{
var key = new IndexDictionaryKey(indecesToReplace, stringStartLength);
if (IndexDictionary.ContainsKey(key))
return IndexDictionary[key];
var indexCombination = new List<string>();
for (int i = 0; i < stringStartLength; i++) {
indexCombination.Add(i.ToString());
}
var combinations = new List<string>();
Choose("", indecesToReplace, indexCombination, combinations);
var value = combinations.Select(i => i.Select(c => Int32.Parse(c.ToString())));
IndexDictionary.Add(key, value);
return value;
}