Programming puzzles: processing lists!

[Gilles59]

(06-03-2017 08:00 PM)pier4r Wrote:  Awesome!

I hope you'll put this also in the general software library!

I agree ;D

What about a DOPERM command to handle list permutations.
Something like :

Code:



INPUT
 { 1 2 3 4 }             @ A list
 2                       @ Number of elements for permutation
 << My program >>        @ to handle each permutation
DOPERM
 
OUPUT (If MyProgram does nothing}
{ {1, 2}, {1, 3}, {1, 4},{2, 1}, {2, 3}, {2, 4},{3, 1}, {3, 2}, {3, 4},{4, 1}, {4, 2}, {4, 3} }