Steven Barclay 3130d9329c Add Equihash.IntListMultimap (private) class for speedup ... Provide a (vastly cut down) drop-in replacement for the Guava multimap instance 'indexMultimap', of type 'ListMultimap<Integer, Integer>', used to map table row indices to block values, to detect collisions at a given block position (that is, in a given table column). The replacement stores (multi-)mappings from ints to ints in a flat int- array, only spilling over to a ListMultimap if there are more than 4 values added for a given key. This vastly reduces the amount of boxing and memory usage when running 'Equihash::findCollisions' to build up the next table as part of Wagner's algorithm.		2021-12-07 09:35:42 +01:00
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src	Add Equihash.IntListMultimap (private) class for speedup	2021-12-07 09:35:42 +01:00