結果

問題 No.275 中央値を求めよ
ユーザー 34056915823405691582
提出日時 2017-01-18 22:13:01
言語 Haskell
(9.10.1)
結果
AC  
実行時間 10 ms / 1,000 ms
コード長 301 bytes
コンパイル時間 6,761 ms
コンパイル使用メモリ 168,192 KB
実行使用メモリ 8,320 KB
最終ジャッジ日時 2024-06-25 00:14:38
合計ジャッジ時間 8,263 ms
ジャッジサーバーID
(参考情報)
judge2 / judge1
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
コンパイルメッセージ
Loaded package environment from /home/judge/.ghc/x86_64-linux-9.8.2/environments/default
[1 of 2] Compiling Main             ( Main.hs, Main.o )

Main.hs:6:33: warning: [GHC-63394] [-Wx-partial]
    In the use of ‘tail’
    (imported from Prelude, but defined in GHC.List):
    "This is a partial function, it throws an error on empty lists. Replace it with drop 1, or use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty."
  |
6 | median xs = median droplast droplast  tail xs where
  |                                 ^^^^
[2 of 2] Linking a.out

ソースコード

diff #
プレゼンテーションモードにする

import Data.List (sort)
import Data.Functor ((<$>))
median [x] = x
median [x,y] = (x+y)/2.0
median xs = median $ droplast $ tail xs where
droplast [x] = []
droplast (x:xs') = x:droplast xs'
main = do
getLine
show . median . map fromIntegral . sort . map read . words <$> getLine >>= putStrLn
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