Permutations/Rank of a permutation: Difference between revisions

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4 A. i.3 NB. return permutation of rank 4
4 A. i.3 NB. return permutation of rank 4
2 0 1
2 0 1
(i.@! A. i.) 3 NB. generate all permutations for 3 items
0 1 2 3 4 5 A. i. 3 NB. generate all 6 permutations for 3 items
0 1 2
0 1 2
0 2 1
0 2 1
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2 0 1
2 0 1
2 1 0
2 1 0
A. (i.@! A. i.) 3 NB. ranks of each permuation
A. 0 1 2 3 4 5 A. i. 3 NB. ranks of each permuation
0 1 2 3 4 5
0 1 2 3 4 5
]ranks=: 4 ? !12 NB. 4 random numbers sampled from integers 0 to 12!
]ranks=: 4 ? !12 NB. 4 random numbers sampled from integers 0 to 12!
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