Testing2 - Intro to Computer ScienceYouTube↗  IA↗(long shot)
Education  19.4K views 2 likes 0 dislikes   23 Feb 2015
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ここでもっと難しいfindの小テストです
So here's a more challenging quiz about find. This one will require you
findの定義を考える必要があります
to think pretty carefully about how find is defined. For any string, so
任意の文字列は設定した変数sを使います
we're going to have a variable s that we've initialized to any string. Your
次のうち常に値がゼロになるのはどれでしょう
goal is to determine which of these will always have the value zero.
1つ目の選択肢はs．find（s）です クォーテーションがありません
So the first choice, s.find (s). Notice there are no quotes around s. The
2つ目はs．find（‘s’）です
second one is s.find('s'). The third one is
3つ目は‘s’．find（‘s’）です
's'.find('s'). The fourth one is
4つ目はs．find（‘’）で空の文字列を渡します
s.find(''). And the final
最後のs．findは
one is s.find Passing
sプラス3つの感嘆符とプラス1を渡します 文字列sが始める値がどんなものであっても
in s concatenated with the string. Three exclamation points, one of my favorites plus one. So check all of the answers where the expression here
結果がゼロになる式を全部答えてください
evaluates to zero, no matter what value the string s starts with. So try
まずよく考えてfindの記述を理解しましょう
to answer this, just based on thinking, understanding the description of find.
Pythonインタプリタを使って
You can always also try things in the Python interpreter
解釈が正しいかどうか確認できます
after that. And see if your interpretation is correct. But remember
ただし目的はどんな文字列sでも
our goal is to answer the question where no matter
結果が常にゼロになるものを求めることです
what the string S is, the resultive expression is always zero.
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