/// <summary>
/// All lines in input should be already sorted
/// </summary>
/// <param name="input"></param>
public List<WordsFrequency> CalcTop(IChunkReader input)
{
string line;
while((line = input.MoveNextLine()) != null)
{
curr = WordsFrequency.Parse(line);
if (prev != null && prev.Word != curr.Word)
{
Handle(prev);
prev = curr;
}
else
{
if (prev == null)
prev = curr;
else
prev.Frequency += curr.Frequency;
}
}
Handle(prev);
return top.ToList();
}
