/**
* Increments a frequency counter for a digram.
*
* @param entry the entry.
* @param increment the increment value.
*/
public void incrementFrequency(DigramFrequencyEntry entry, int increment) {
// findout the old bucket and remove this entry
ArrayList<DigramFrequencyEntry> oldBucket = this.bucketsToEntries.get(entry.getFrequency());
oldBucket.remove(entry);
if (oldBucket.isEmpty()) {
this.bucketsToEntries.remove(entry.getFrequency());
}
// get the increment added
int newFreq = entry.getFrequency() + increment;
entry.setFrequency(newFreq);
// put into the new bucket
ArrayList<DigramFrequencyEntry> bucket = this.bucketsToEntries.get(newFreq);
if (null == bucket) {
bucket = new ArrayList<DigramFrequencyEntry>();
this.bucketsToEntries.put(newFreq, bucket);
}
bucket.add(entry);
}
