Re^4: Out of Memory when generating large matrix

in reply to Re^3: Out of Memory when generating large matrix
in thread Out of Memory when generating large matrix

> counting unique elements

What is that supposed to mean?

The elements are by definition unique IFF their count is one!

Cheers Rolf
_{(addicted to the Perl Programming Language and ☆☆☆☆ :)

Wikisyntax for the Monastery}

Comment on Re^4: Out of Memory when generating large matrix

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Re^5: Out of Memory when generating large matrix by Anonymous Monk on Mar 06, 2018 at 14:17 UTC
It was supposed to mean that a count is obtained for each of the (unique) element in a set. (Not the number of unique elements.) It doesn't really matter though, what is important is that a set on unique elements has to be constructed. Constructing a set of unique elements is the same (algorithmically) as sorting, with the proviso that an ordered comparison function is available (i.e. set can be ordered). If only compare for equality is available, the construction becomes `O(n*n)`.	[reply]
Re^6: Out of Memory when generating large matrix by LanX (Saint) on Mar 06, 2018 at 14:46 UTC
SD, this doesn't make sense. Cheers Rolf _{(addicted to the Perl Programming Language and ☆☆☆☆ :) Wikisyntax for the Monastery}	[reply]

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