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中山資工-離散期中考
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Jason Wang
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Dec 18, 2014, 5:10:06 AM
12/18/14
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不好意思,又要麻煩助教了
關於下列這題畫出FSM,我不是很確定我的答案(如附圖)
(a) Construct a state diagram for a finite state machine with I = O = {0, 1}
that recognizes all strings in the language {11} {0, 1}* {00}, where I is the input
alphabet and O is the output alphabet of the machine.
(b) Construct a state
diagram for a finite state machine that recognizes all strings in {11} {01}* {00}.
FSM.jpg
林立宇
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Dec 21, 2014, 10:33:18 AM
12/21/14
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這樣畫會有些問題
你設計的FSM變成是一旦過程中有出現"子字串"為題目要的, 那就會接受
但題目要的字串應該是嚴格要求開始為11
所以當一開始不是11時, 你不能讓它繞回前面的state重跑
應該要直接reject之後所有的可能
也就是說你可以造一個state, 讓一開始不是11的都直接連到那個state
在那個state中, 不管是輸入0還是1, output都是0
Jason Wang
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Dec 21, 2014, 11:48:46 AM
12/21/14
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謝謝助教幫我突破盲點!!
一直自以為substring的時候也能被recognized
我一整個被老師考倒了= =
現在覺得自己是個很弱的助教...
下圖是新畫的,麻煩助教再過目一下。
10846650_779039922149637_1770819745_n.jpg
林立宇
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Dec 25, 2014, 6:58:43 AM
12/25/14
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看起來沒問題了
不用怕弱, 很多人也都是邊教邊學
當助教是很好的學習機會, 加油!
Jason Wang
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Dec 25, 2014, 7:11:54 AM
12/25/14
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謝謝助教
在這裡也祝福大家能考上理想的研究所!!
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