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AOJトライに関する知識知見の記録共有:Volume0-0051

Posted at

タスク概要

Differential II

コード実装例

TIPS

  1. 例外処理含む評価パターンを追加
  2. 入力値の小数対応
import pprint, sys, time
import itertools 

def core(arg, acc=False):
    if acc:
        pass
    else:
        perms = list(itertools.permutations(str(arg)))
        M, m = [float("".join(f(perms))) for f in [max, min]]
    return [M, m, M - m]

def app(*args):
    ret = []
    for arg in args:
        st = time.time()
        try:
            r = core(arg)
        except Exception as e:
            r = e
        ret.append([arg, round(time.time() - st, 6), r])
    return ret

print(sys.version)
pprint.pprint(app(
    # basic examples
    65539010,
    # additional examples
    1234.6,
    # exceptional examples
    "例外入力"
))

実行結果

各種補足情報出力(入力値FB、デバッグログ等)含む

3.8.10 (default, Jun  2 2021, 10:49:15) 
[GCC 9.4.0]
[[65539010, 0.012844, [96553100.0, 135569.0, 96417531.0]],
 [1234.6, 0.000144, [64321.0, 0.12346, 64320.87654]],
 ['例外入力', 1.3e-05, ValueError("could not convert string to float: '外力入例'")]]

補遺

残課題

  1. 実行速度の改善(枝刈り、データ構造の見直し等)
  2. 入力値の負数対応
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