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  1. @(n,m)sum(sum(diff((perms(1:n))')>0)==m)
  2.  
  3. ans(7,4)
Success #stdin #stdout 0.22s 103616KB
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ans =

@(n, m) sum (sum (diff ((perms (1:n))') > 0) == m)

ans =  1191
https://ideone.com/VXYZY4
language:
Octave (octave 4.4.1)
created:
7 years ago
visibility:
public

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