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

Initial data commit

Browse source
This commit is contained in:
Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 72d218235f
commit f23f22d71c
199087 changed files with 3378941 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

19
Task/Permutations-Derangements/PARI-GP/permutations-derangements.parigp Normal file
View file

@ -0,0 +1,19 @@
derangements(n)=if(n,round(n!/exp(1)),1);
derange(n)={
my(v=[[]],tmp);
for(level=1,n,
tmp=List();
for(i=1,#v,
for(k=1,n,
if(k==level, next);
for(j=1,level-1,if(v[i][j]==k, next(2)));
listput(tmp, concat(v[i],k))
)
);
v=Vec(tmp)
);
v
};
derange(4)
for(n=0,9,print("!"n" = "#derange(n)" = "derangements(n)))
derangements(20)