private void resizeNodeArrays ( int newBucketCount ) { // every per-bucket array needs to be updated counts . ensureCapacity ( newBucketCount ) ; valuePositions . ensureCapacity ( newBucketCount ) ; nextPointers . ensureCapacity ( newBucketCount ) ; valueAndGroupHashes . ensureCapacity ( newBucketCount ) ; groupIds . ensureCapacity ( newBucketCount ) ; }
parallel arrays with data for