Design a Turing machine M that decides the language L = {0"1" |n> 1}.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Design a Turing machine M that decides the language L = {0"1" |n> 1}.
Transcribed Image Text:Design a Turing machine M that decides the language L = {0"1" |n> 1}.
(1) Give a high level description of M in English.
The following is an answer to this question. Please verify its correctness.
1. Move right.
2. Loop:
2.1. If the current symbol is 0, change it to $ and move right. Otherwise exit loop.
2.2. Scan rightwards, past O's and #'s to find 1.
2.3. If 1 found, change it to # and move left. Otherwise reject.
2.4. Scan leftwards, past O's and #'s to find $.
2.5. When finding the first $, move right, and go back to 2.1.
3. If the current symbol is #, more right. Otherwise reject.
4. Scan rightwards, past #'s, to find the blank symbol.
5. When finding the first blank symbol, move right and accept.
The provided answer is correct.
The provided answer is incorrect.
Transcribed Image Text:(1) Give a high level description of M in English. The following is an answer to this question. Please verify its correctness. 1. Move right. 2. Loop: 2.1. If the current symbol is 0, change it to $ and move right. Otherwise exit loop. 2.2. Scan rightwards, past O's and #'s to find 1. 2.3. If 1 found, change it to # and move left. Otherwise reject. 2.4. Scan leftwards, past O's and #'s to find $. 2.5. When finding the first $, move right, and go back to 2.1. 3. If the current symbol is #, more right. Otherwise reject. 4. Scan rightwards, past #'s, to find the blank symbol. 5. When finding the first blank symbol, move right and accept. The provided answer is correct. The provided answer is incorrect.
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