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

langs a-z

Browse source
This commit is contained in:
Ingy döt Net 2013-04-10 22:43:41 -07:00
parent db842d013d
commit d066446780
11389 changed files with 98361 additions and 1020 deletions
Download patch file Download diff file Expand all files Collapse all files

20
Task/Forward-difference/Pop11/forward-difference.pop11 Normal file
View file

@ -0,0 +1,20 @@
define forward_difference(l);
lvars res = [], prev, el;
if l = [] then
return([]);
endif;
front(l) -> prev;
for el in back(l) do
cons(el - prev, res) -> res;
el -> prev;
endfor;
rev(res);
enddefine;
define nth_difference(l, n);
lvars res = l, i;
for i from 1 to n do
forward_difference(res) -> res;
endfor;
res;
enddefine;