結果

問題 No.275 中央値を求めよ
ユーザー piconic_Xpiconic_X
提出日時 2015-11-12 03:19:18
言語 OCaml
(5.2.1)
結果
AC  
実行時間 3 ms / 1,000 ms
コード長 1,029 bytes
コンパイル時間 409 ms
コンパイル使用メモリ 19,700 KB
実行使用メモリ 5,248 KB
最終ジャッジ日時 2024-10-08 23:39:55
合計ジャッジ時間 1,231 ms
ジャッジサーバーID
(参考情報)
judge5 / judge4
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 38
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

let string_to_list str n cut =
if n = 1 then [int_of_string str]
else
let rec move_element pos ls =
if List.length ls = n - 1 then
let last_int = int_of_string (String.sub str (pos + 1) ((String.length str - 1) - pos)) in
last_int :: ls
else
let pos1 = String.index_from str (pos + 1) cut in
let strint = String.sub str (pos + 1) (pos1 - pos - 1) in
let int = int_of_string strint in
let newls = int :: ls in
move_element pos1 newls
in
let first_pos = String.index_from str 0 cut in
let first_int = int_of_string (String.sub str 0 first_pos) in
move_element first_pos [first_int]
let median n ls =
let ls_sorted = List.fast_sort compare ls in
if n mod 2 = 0 then
(float_of_int ((List.nth ls_sorted ((n/2) - 1)) + (List.nth ls_sorted ((n/2 + 1) - 1)))) /. 2.
else
float_of_int (List.nth ls_sorted (((n + 1) / 2) - 1))
let () =
let n = int_of_string (read_line ()) in
let args = read_line () in
print_float (median n (string_to_list args n ' '));
print_string "\n"
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