aparler/RosettaCodeData
1
0
Fork 0
Code Issues 12 Pull requests 3 Projects Releases Packages Wiki Activity Actions

September 2017 Update

Browse source
This commit is contained in:
Ingy döt Net 2017-09-23 10:01:46 +02:00
parent bba7bfd280
commit ba8067c3b7
14570 changed files with 153136 additions and 63871 deletions
Download patch file Download diff file Expand all files Collapse all files

12
Task/Permutations-by-swapping/Sidef/permutations-by-swapping.sidef
View file

@ -1,20 +1,20 @@
func perms(n) {
var perms = [[+1]]
n.times { |x|
var sign = -1;
for x in (1..n) {
var sign = -1
perms = gather {
for s,*p in perms {
var r = (0 .. p.len);
var r = (0 .. p.len)
take((s < 0 ? r : r.flip).map {|i|
[sign *= -1, p[0..i-1], x, p[i..p.end]]
[sign *= -1, p[^i], x, p[i..p.end]]
}...)
}
}
}
perms;
perms
}
var n = 4;
var n = 4
for p in perms(n) {
var s = p.shift
s > 0 && (s = '+1')