public static final HllSketch heapify ( final Memory srcMem ) { final CurMode curMode = checkPreamble ( srcMem ) ; final HllSketch heapSketch ; if ( curMode == CurMode . HLL ) { final TgtHllType tgtHllType = extractTgtHllType ( srcMem ) ; if ( tgtHllType == TgtHllType . HLL_4 ) { heapSketch = new HllSketch ( Hll4Array . heapify ( srcMem ) ) ; } else if ( tgtHllType == TgtHllType . HLL_6 ) { heapSketch = new HllSketch ( Hll6Array . heapify ( srcMem ) ) ; } else { //Hll_8 heapSketch = new HllSketch ( Hll8Array . heapify ( srcMem ) ) ; } } else if ( curMode == CurMode . LIST ) { heapSketch = new HllSketch ( CouponList . heapifyList ( srcMem ) ) ; } else { heapSketch = new HllSketch ( CouponHashSet . heapifySet ( srcMem ) ) ; } return heapSketch ; }
Heapify the given Memory which must be a valid HllSketch image and may have data .