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  1. let butlast lst =
  2.   (List.rev (List.tl (List.rev lst)))
  3.  
  4. let last lst =
  5.   List.hd (List.rev lst)
  6.  
  7. let pascal n =
  8.   List.fold_left (fun x y -> match y with
  9.         0 -> x
  10.       | 1 -> x @ [[y; y]]
  11.       | _ -> let lst = last x in
  12.         x @ [1::((List.map2 (+) (butlast lst) (List.tl lst)) @ [1])])
  13.     [[1]] (0::(List.init n (fun x -> x + 1)))
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
File "prog.ml", line 13, characters 15-24:
Error: Unbound value List.init
stdout 
Standard output is empty
https://ideone.com/LMViJM
language:
OCaml (ocamlopt 4.05.0)
created:
2 years ago
visibility:
public

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