public static List <GenericUserSimilarity.UserUserSimilarity> GetTopUserUserSimilarities(
int howMany, IEnumerator <GenericUserSimilarity.UserUserSimilarity> allSimilarities)
{
var topSimilarities
= new SortedSet <GenericUserSimilarity.UserUserSimilarity>();
bool full = false;
double lowestTopValue = Double.NegativeInfinity;
while (allSimilarities.MoveNext())
{
GenericUserSimilarity.UserUserSimilarity similarity = allSimilarities.Current;
double value = similarity.getValue();
if (!Double.IsNaN(value) && (!full || value > lowestTopValue))
{
topSimilarities.Add(similarity);
if (full)
{
topSimilarities.Remove(topSimilarities.Max);// topSimilarities.poll();
}
else if (topSimilarities.Count > howMany)
{
full = true;
topSimilarities.Remove(topSimilarities.Max);//topSimilarities.poll();
}
lowestTopValue = topSimilarities.Max.getValue();
}
}
int size = topSimilarities.Count;
var result = new List <GenericUserSimilarity.UserUserSimilarity>(size);
result.AddRange(topSimilarities);
return(result);
}
public static List <GenericUserSimilarity.UserUserSimilarity> getTopUserUserSimilarities(int howMany, IEnumerator <GenericUserSimilarity.UserUserSimilarity> allSimilarities)
{
SortedSet <GenericUserSimilarity.UserUserSimilarity> collection = new SortedSet <GenericUserSimilarity.UserUserSimilarity>();
bool flag = false;
double negativeInfinity = double.NegativeInfinity;
while (allSimilarities.MoveNext())
{
GenericUserSimilarity.UserUserSimilarity current = allSimilarities.Current;
double d = current.getValue();
if (!double.IsNaN(d) && (!flag || (d > negativeInfinity)))
{
collection.Add(current);
if (flag)
{
collection.Remove(collection.Max);
}
else if (collection.Count > howMany)
{
flag = true;
collection.Remove(collection.Max);
}
negativeInfinity = collection.Max.getValue();
}
}
List <GenericUserSimilarity.UserUserSimilarity> list = new List <GenericUserSimilarity.UserUserSimilarity>(collection.Count);
list.AddRange(collection);
return(list);
}