/// <summary>
/// Compare results with the original test set.
/// </summary>
/// <param name="results"></param>
/// <param name="nMostFrequent"></param>
/// <param name="testSet"></param>
private void TestResult(WordOccurences results, int nMostFrequent, TestData[] testSet)
{
Assert.AreEqual(results.Count, nMostFrequent, "Incorrect number of results.");
int i = 0;
foreach (OccurenceInfo oi in results)
{
TestResult(oi, testSet[i++]);
}
}
/// <summary>
/// Traverse frequency array from the back to get n most frequency words.
/// </summary>
/// <param name="frequencyArray"></param>
/// <param name="n"></param>
/// <returns></returns>
private WordOccurences GetTopNWords(OccurenceInfo[] frequencyArray, int n)
{
WordOccurences result = new WordOccurences();
//have to filter out null array entries
int len = frequencyArray.Length;
int index = 0;
int count = 0;
while (count < n)
{
OccurenceInfo fi = frequencyArray[len - index - 1]; //start at the back of the array
if (fi != null)
{
result.Add(fi);
count++;
}
index++;
}
return result;
}