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rose-ash/lib/ocaml/baseline
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ocaml: phase 5.1 subset_sum.ml baseline (count subsets of [1..8] summing to 10 = 8)
Pure recursion — at each element, take it or don't:

  let rec count_subsets xs target =
    match xs with
    | [] -> if target = 0 then 1 else 0
    | x :: rest ->
      count_subsets rest target
      + count_subsets rest (target - x)

For [1;2;3;4;5;6;7;8] target 10, the recursion tree has 2^8 = 256
leaves. Returns 8 — number of subsets summing to 10:

  1+2+3+4, 1+2+7, 1+3+6, 1+4+5, 2+3+5, 2+8, 3+7, 4+6 = 8

Tests doubly-recursive list traversal pattern with single-arg list
+ accumulator-via-target.

65 baseline programs total.
2026-05-09 13:46:40 +00:00
..