I tried to understand this:
f=:',/(0,.1+y){"2 1\:"1=i.>:{:$y'(13 : )
f
[: ,/ (0 ,. 1 + ]) {"2 1 [: \:"1 [: = [: i. [: >: [: {: $
But I don't know how to use it.
Linda
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Linda Alvord
Sent: Thursday, May 23, 2013 4:02 AM
To: [email protected]
Subject: [Jprogramming] Perm Mystery
perm=: 3 : 0
z=. i.1 0
for. i.y do. z=.,/(0,.1+z){"2 1\:"1=i.>:{:$z end.
)
perm 3
0 1 2
0 2 1
1 0 2
1 2 0
2 0 1
2 1 0
NB. for. T do. B end.
i.3
0 1 2
How does this work? When is 0 1 2 true? How often does "B" get
executed?
Linda
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