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深入理解運算原理|從簡單的機器到無所不能的程式
book

深入理解運算原理|從簡單的機器到無所不能的程式

by Tom Stuart
November 2017
Beginner to intermediate
344 pages
7h 2m
Chinese
GoTop Information, Inc.
Content preview from 深入理解運算原理|從簡單的機器到無所不能的程式
244
|
7
ccdddddddd ( 數值 4)
ddddddddeeff
ddddddeeffff
ddddeeffffff
ddeeffffffff
eeffffffffff ( 數值 5)
=> nil
❶
加倍規則以字元
c
d
編碼將 2 轉換成 4
❷
遞增規則將 4 轉換成 5,這次是以
e
f
編碼。
除了將數值改成其他數值,標籤系統還可以檢查它們的數學屬性。以下的標籤系統會測
試數值是奇數還是偶數:
>> rulebook = TagRulebook.new(2, [
TagRule.new('a', 'cc'), TagRule.new('b', 'd'),
TagRule.new('c', 'eo'), TagRule.new('d', ''), TagRule.new('e', 'e')
])
=> #<struct TagRulebook >
如果它的輸入表示為偶數,這個系統會停在單字元字串
e
(這是偶數 "even" 的縮寫):
>> system = TagSystem.new('aabbbbbbbb', rulebook)
=> #<struct TagSystem >
>> system.run
aabbbbbbbb ( 數值 4)
bbbbbbbbcc
bbbbbbccd
bbbbccdd
bbccddd
ccdddd
ddddeo
ddeo
eo
e
=> nil
❶
規則
a
b
將輸入減半;
ccdddd
表示數值 2
❷
規則
c
刪除開頭的
cc
對組,並附加字元
eo ...
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Publisher Resources

ISBN: 9789864766000