Re:Removing Array Duplicates
by saagarjha on Friday April 12, 2019 @04:49AM
(#19643159)
The code in the article has a sort in it.
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Why would that be "more copies" than building up a hash table is what I don't get.
It requires many passes through the list, and even O(LogN) is probably enough to make it slower than a hash based O(n) approach depending on list size. Hashing is fast. If space is an issue, just use an appropriately sized bloom filter.