# Package org.apache.sysds.runtime.compress.utils

Interface Summary
Util

Class Summary
DArrCounts
DblArray: Helper class used for bitmap extraction.
DblArrayCountHashMap
DblArrayIntListHashMap
DblArrayIntListHashMap.DArrayIListEntry
DCounts
DoubleCountHashMap
DoubleIntListHashMap: This class provides a memory-efficient replacement for `HashMap<Double,IntArrayList>` for restricted use cases.
DoubleIntListHashMap.DIListEntry
IntArrayList