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Index finite lists of positive integers: Difference between revisions
Index finite lists of positive integers (view source)
Revision as of 16:13, 13 May 2014
, 10 years ago→Tacit version
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=== Tacit
Base 11 encoding:
Line 171:
1 2 3 10 100 987654321 135792468107264516704251 7</lang>
Prime factorization (Gödelian) encoding:
<lang j> rank=. */@:(^~ p:@:i.@:#)@:>:@:x:
unrank=. <:@:(#;.1@:~:@:q:)</lang>
Example use:
<lang J> rank 1 11 16 1 3 9 0 2 15 7 19 10
6857998574998940803374702726455974765530187550029640884386375715876970128518999225074067307280381624132537960815429687500
unrank 6857998574998940803374702726455974765530187550029640884386375715876970128518999225074067307280381624132537960815429687500x
1 11 16 1 3 9 0 2 15 7 19 10</lang>
=== Bijective ===
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