fork download
copy 
  1. def unfold(f, x):
  2. 	while x is not None:
  3. 		yield x
  4. 		x = f(x)
  5.  
  6. def next_elem(t):
  7. 	(a, b, c, d) = t
  8. 	return (b, c, d, a*(a+1))
  9.  
  10. logical = unfold(next_elem, (4, 5, 6, 8))
  11.  
  12. for n in logical:
  13. 	print(n)
  14. 	if n[-1] > 1000:
  15. 		break
Success #stdin #stdout 0.11s 14120KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
(4, 5, 6, 8)
(5, 6, 8, 20)
(6, 8, 20, 30)
(8, 20, 30, 42)
(20, 30, 42, 72)
(30, 42, 72, 420)
(42, 72, 420, 930)
(72, 420, 930, 1806)
https://ideone.com/6VEfu4
language:
Python 3 (python  3.12)
created:
5 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!