September 2014
Intermediate to advanced
336 pages
7h 53m
Japanese
Content preview from アンダースタンディング コンピュテーション ―単純な機械から不可能なプログラムまで
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
88
3
章 最も単純なコンピュータ
図3-13
a|b
のNFAは、入力を読む前に自由移動によって、元のNFAの開始状態のいずれかに移動できま
す。そこから
'a'
か
'b'
のいずれかを読むことで、受理状態に到達できます。任意の2つの機械をつ
なげたい場合も、新しい開始状態と2つの自由移動を追加することで、同じように簡単に実現すること
ができます。
図3-14
または
または
3.3
正規表現
89
この場合、組み合わせた機械の構成要素は次のようになります。
●
新しい開始状態
●
両方のNFAのすべての受理状態
●
両方のNFAのすべての規則
●
新しい開始状態をそれぞれのNFAの元の開始状態につなげるための追加の2 つの自由移動
これを
Choose#to_nfa_design
として実装するのも簡単です。
class Choose
def to_nfa_design
first_nfa_design = first.to_nfa_design
second_nfa_design = second.to_nfa_design
start_state = Object.new
accept_states = first_nfa_design.accept_states + second_nfa_design.accept_s ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.