NClassifier.Summarizer.SimpleSummarizer.FindWordsWithFrequency C# (CSharp) Méthode

        private string[] FindWordsWithFrequency(Hashtable wordFrequencies, int frequency)
        {
            if (wordFrequencies == null || frequency == 0)
                return new string[0];
            else
            {
                ArrayList results = new ArrayList();
                foreach (string word in wordFrequencies.Keys)
                {
                    if (frequency == (int)wordFrequencies[word])
                        results.Add(word);
                }
                return (string[])results.ToArray(typeof(string));
            }
        }