/// <summary>
/// Encode list of integers to bytes
/// </summary>
/// <param name="value">List of integers</param>
/// <returns>bytes array</returns>
public byte[] Encoding(List <MaxPriorityQueue.InvertedIndex> queue)
{
queue.Sort(
delegate(MaxPriorityQueue.InvertedIndex Item1, MaxPriorityQueue.InvertedIndex Item2)
{
int docID1 = Item1.GetDocumentId();
int docID2 = Item2.GetDocumentId();
if (docID1 < docID2)
{
return(-1);
}
if (docID2 < docID1)
{
return(1);
}
else
{
return(0);
}
});
List <int> concat = new List <int>();
//1. Write the document frequency
concat.Add(queue.Count);
int previousDocId = 0;
int documentID;
int termFreq;
foreach (MaxPriorityQueue.InvertedIndex item in queue)
{
documentID = item.GetDocumentId();
//1. Write the document id using gaps
concat.Add(documentID - previousDocId);
termFreq = item.GetTermFreq();
//3.Write the term frequency
concat.Add(termFreq);
previousDocId = documentID;
}
return(VariableBytes.Compress(concat));
}