Timeline for Replacing a sub-partition (unordered list; multiset)
Current License: CC BY-SA 4.0
3 events
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| May 25, 2020 at 14:14 | comment | added | CA Trevillian |
Mr.Wizard, for the second example, you should just be able to use rep[{2, c : (1) ..} -> {2 + c}] -- oddly, though, this does not work. I think that has something to do with scoping of the contexts of the arguments when one uses symbols in this way? I think I said that correctly...
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| May 22, 2020 at 13:44 | comment | added | J. M.'s missing motivation♦ |
"I didn't quite follow your second example" - the OP just sorted the list reverse-lexicographically again afterwards, but {5, 2, 1, 1} maps to {5, 2 + 2}, and {2, 2, 2, 1, 1, 1} maps to {2, 2, 2 + 3}. Hopefully that clarifies the pattern for you.
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| May 22, 2020 at 13:38 | history | answered | Mr.Wizard | CC BY-SA 4.0 |