Files
rose-ash/lib/ocaml/baseline/merge_two.ml
giles 254ef0daff
Some checks failed
Test, Build, and Deploy / test-build-deploy (push) Failing after 23s
ocaml: phase 5.1 merge_two.ml baseline (merge two sorted lists, length*sum = 441)
Standard two-finger merge with nested match-in-match:

  let rec merge xs ys =
    match xs with
    | [] -> ys
    | x :: xs' ->
      match ys with
      | [] -> xs
      | y :: ys' ->
        if x <= y then x :: merge xs' (y :: ys')
        else y :: merge (x :: xs') ys'

Used as a building block in merge_sort.ml (iter 104) but called out
as its own baseline here.

  merge [1;4;7;10] [2;3;5;8;9]   = [1;2;3;4;5;7;8;9;10]
  length 9, sum 49, product 441.

85 baseline programs total.
2026-05-09 17:24:53 +00:00

15 lines
293 B
OCaml

let rec merge xs ys =
match xs with
| [] -> ys
| x :: xs' ->
match ys with
| [] -> xs
| y :: ys' ->
if x <= y then x :: merge xs' (y :: ys')
else y :: merge (x :: xs') ys'
;;
let m = merge [1; 4; 7; 10] [2; 3; 5; 8; 9] in
List.fold_left (+) 0 m * List.length m