From 8c7809d024e85d0a8acfb794a4db41b0e4bc13e6 Mon Sep 17 00:00:00 2001
From: Shinya Sato <shinnya.sato@gmail.com>
Date: Mon, 2 May 2022 09:49:01 +0900
Subject: v0.8.2-1

---
 comparison/OCaml/msort260000.ml | 49 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 comparison/OCaml/msort260000.ml

(limited to 'comparison/OCaml/msort260000.ml')

diff --git a/comparison/OCaml/msort260000.ml b/comparison/OCaml/msort260000.ml
new file mode 100644
index 0000000..a44f41a
--- /dev/null
+++ b/comparison/OCaml/msort260000.ml
@@ -0,0 +1,49 @@
+open Format
+
+let rec split (alist : int list) =
+  match alist with
+    [] -> ([], [])
+  | [a] -> ([a], [])
+  | a::b::cs ->
+    let (m,n) = split cs in
+    (a::m, b::m) ;;
+
+let rec merge (alist : int list) (blist : int list) =
+  match alist with
+    [] -> blist
+  | x::xs ->
+    match blist with
+      [] -> x::xs
+    | y::ys ->
+      if x<y then x::(merge xs (y::ys))
+      else y::(merge (x::xs) ys) ;;
+
+
+let rec msort (alist : int list) = 
+  match alist with
+    [] -> []
+  | a::[] -> [a]
+  | a::b::[] -> if a<b then [a;b] else [b;a]
+  | xs ->
+    let (m,n) = split xs
+    in merge (msort m) (msort n) ;;
+    
+
+
+let rec mkRandList n =
+  match n with
+    0 -> []
+  | n -> (Random.int 10000)::(mkRandList (n-1)) ;;
+
+let rec validation alist =
+  let rec validation_cons x blist =
+    match blist with
+      [] -> true
+    | y::ys -> if x<=y then (validation_cons y ys) else false
+  in
+  match alist with
+    [] -> true
+  | x::xs -> validation_cons x xs;;
+
+
+let () = print_bool (validation (msort (mkRandList 260000)));;
-- 
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