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Some useful problems
Recent questions tagged finite-automata
0
votes
1
answer
511
Finite automata
1.How to identify the reachable state in NFA or DFA.
1.How to identify the reachable state in NFA or DFA.
Mayankprakash
266
views
Mayankprakash
asked
Jul 14, 2018
Theory of Computation
finite-automata
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–
1
votes
2
answers
512
UGC NET CSE | July 2018 | Part 2 | Question: 31
Two finite state machines are said to be equivalent if they: Have the same number of edges Have the same number of states Recognize the same set of tokens Have the same number of states and edges
Two finite state machines are said to be equivalent if they:Have the same number of edgesHave the same number of statesRecognize the same set of tokensHave the same numbe...
Pooja Khatri
15.4k
views
Pooja Khatri
asked
Jul 13, 2018
Theory of Computation
ugcnetcse-july2018-paper2
theory-of-computation
finite-automata
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–
0
votes
2
answers
513
UGC NET CSE | July 2018 | Part 2 | Question: 32
The finite state machine given in figure below recognizes: anu string of odd number of a's anu string of odd number of b's any string of even number of a's and odd number of b's any string of odd number of a's and odd number of b's
The finite state machine given in figure below recognizes:anu string of odd number of a'sanu string of odd number of b'sany string of even number of a's and odd number of...
Pooja Khatri
6.9k
views
Pooja Khatri
asked
Jul 13, 2018
Theory of Computation
ugcnetcse-july2018-paper2
theory-of-computation
finite-automata
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–
0
votes
1
answer
514
Made easy workbook
match the following Caption
match the following Caption
asharani97
497
views
asharani97
asked
Jul 13, 2018
Theory of Computation
finite-automata
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–
0
votes
0
answers
515
minimum finite automata
construct the minimul FA, that accepts all the string of 0's and 1's A)The second symbol from the right end of the string is 0 B)The third symbol from the right end of the string is 1
construct the minimul FA, that accepts all the string of 0's and 1'sA)The second symbol from the right end of the string is 0B)The third symbol from the right end of the ...
suraj patel
879
views
suraj patel
asked
Jul 10, 2018
Theory of Computation
finite-automata
theory-of-computation
minimal-state-automata
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–
0
votes
1
answer
516
Minimum finite automata
Construct the Minimum FA that accepts all the string of 0's and 1's where A)Every String start and end with Zero. B)Every string Start and end with Same Symbol.
Construct the Minimum FA that accepts all the string of 0's and 1's whereA)Every String start and end with Zero.B)Every string Start and end with Same Symbol.
suraj patel
2.6k
views
suraj patel
asked
Jul 10, 2018
Theory of Computation
finite-automata
theory-of-computation
minimal-state-automata
number-of-states
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–
2
votes
1
answer
517
Peter Linz Edition 4 (Page No. 51)
Please Explain This:-
Please Explain This:-
swpril
643
views
swpril
asked
Jul 9, 2018
Theory of Computation
theory-of-computation
finite-automata
peter-linz
peter-linz-edition4
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–
0
votes
1
answer
518
Peter Linz Edition 4 Exercise 2.1 Question 7 (Page No. 47)
Can you please help me. I don't understand the question statement, please explain this question's statements. What they are trying to say in each statement what does L={w:|w| mod 2=0} means? Explain any one of them, please. Chapter 2 Exercise Question 7(a,b,c,d.e,f Peter Linz
Can you please help me. I don't understand the question statement, please explain this question's statements.What they are trying to say in each statementwhat does L={w:|...
swpril
1.6k
views
swpril
asked
Jul 8, 2018
Theory of Computation
theory-of-computation
peter-linz
peter-linz-edition4
finite-automata
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0
votes
2
answers
519
NFA TOC
Consider the following NFA. Length of the shortest string which is not accepted by NFA ?
Consider the following NFA.Length of the shortest string which is not accepted by NFA ?
Priyansh Singh
606
views
Priyansh Singh
asked
Jul 3, 2018
Theory of Computation
finite-automata
theory-of-computation
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–
0
votes
1
answer
520
Simplifying regular expressions
What is regex for the DFA: I am coming up with following two: 1. b*a(a+b)* and 2. b*a(b+ab*a)*+b*ab*a(ab*a+b)* Both seems to be correct to me. For X1, we have regex b*a(b+ab*a) For X2, we have regex b*ab*a(ab*a ... question: I want to know if I can simplify regex 2 to regex 1 by regex identities, but not by any other approach say by dfa minimization. Is it possible?
What is regex for the DFA:I am coming up with following two:1. b*a(a+b)* and2. b*a(b+ab*a)*+b*ab*a(ab*a+b)*Both seems to be correct to me. For X1, we have regex b*a(b+ab*...
GateAspirant999
1.2k
views
GateAspirant999
asked
Jul 1, 2018
Theory of Computation
theory-of-computation
regular-expression
finite-automata
regular-language
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–
2
votes
2
answers
521
Peter Linz Edition 4 Exercise 2.1 Question 21 (Page No. 48)
Let L be the language accepted by the automaton $L = ${$(a^{n})b:n≥0$}. Find a dfa that accepts the language $L^{2} - L$.
Let L be the language accepted by the automaton $L = ${$(a^{n})b:n≥0$}. Find a dfa that accepts the language $L^{2} - L$.
Apoorva Jain
791
views
Apoorva Jain
asked
Jun 30, 2018
Theory of Computation
theory-of-computation
regular-language
peter-linz
peter-linz-edition4
finite-automata
grammar
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–
0
votes
1
answer
522
#DFA #TOC #theoryofcomputation
How to construct an automata with even number of a's OR odd number of b's?
How to construct an automata with even number of a's OR odd number of b's?
aditykansara
524
views
aditykansara
asked
Jun 23, 2018
Theory of Computation
finite-automata
theory-of-computation
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–
0
votes
0
answers
523
ISI CSB 2018 Question number C4.
C4. Construct a Deterministic Finite Automaton (DFA) to accept L={s1s2.....sn | n >=1; for each i=1,2,.....n, si € {0,1}, and the number of 1's minus the number of 0's in s1s2....si is zero,one or two} For example, the DFA should accept 11 or 1100 but not 1110.
C4. Construct a Deterministic Finite Automaton (DFA) to acceptL={s1s2.....sn | n >=1; for each i=1,2,.....n, si € {0,1}, and the number of 1's minus the number of 0's i...
Anwesha Kashyap
316
views
Anwesha Kashyap
asked
Jun 19, 2018
Theory of Computation
isi
finite-automata
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–
0
votes
1
answer
524
Peter Linz Edition 4 Exercise 2.1 Question 6 (Page No. 47)
With $Σ = $ {$a,b$} , give a dfa for $L =$ {$w_1aw_2: |w_1|≥ 3, |w_2|≤ 5$}.
With $Σ = $ {$a,b$} , give a dfa for $L =$ {$w_1aw_2: |w_1|≥ 3, |w_2|≤ 5$}.
Harshitha 123
764
views
Harshitha 123
asked
Jun 16, 2018
Theory of Computation
theory-of-computation
peter-linz
peter-linz-edition4
finite-automata
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–
0
votes
1
answer
525
Decision properties of finite automata
Is equivalence problem decidable problem or not?
Is equivalence problem decidable problem or not?
Harshitha 123
1.6k
views
Harshitha 123
asked
Jun 15, 2018
Theory of Computation
theory-of-computation
finite-automata
+
–
0
votes
0
answers
526
Theory of computation
What is grid automata (m+1)(n+1) state calculation? (For some question asked from Peter Linz unit -2 exercise 2(d) the answer is given as" it is like grid automata and to calculate number of states we can use (m+1)(n+1) if we require m a's and n b's" and the question is "all strings with at least one 'a' and exactly 2b's" )
What is grid automata (m+1)(n+1) state calculation? (For some question asked from Peter Linz unit -2 exercise 2(d) the answer is given as" it is like grid automata and to...
Harshitha 123
219
views
Harshitha 123
asked
Jun 14, 2018
Theory of Computation
finite-automata
theory-of-computation
+
–
0
votes
0
answers
527
Minimal dfa
How many states will be present in L={w/(n(a) + (2 n(b)mod 3)) lessthan 2} ? (I got 7 states is that correct)
How many states will be present in L={w/(n(a) + (2 n(b)mod 3)) lessthan 2} ? (I got 7 states is that correct)
Harshitha 123
417
views
Harshitha 123
asked
Jun 12, 2018
Theory of Computation
theory-of-computation
minimal-state-automata
finite-automata
number-of-states
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–
0
votes
1
answer
528
GATE CS Mock 2018 (Set -2)
Let δ denote the transition function and α denoted the extended transition function of the ε-NFA whose transition table is given below: Which of the following option is correct? A) α (q1,aba) is {q0, q2} B) null reachable states are {q0, q1, q2}B C) α (q3,bab) is {q0, q1, q2, q3} D) None of these
Let δ denote the transition function and α denoted the extended transition function of the ε-NFA whose transition table is given below:Which of the following option is...
Nikhil Patil
1.5k
views
Nikhil Patil
asked
Jun 11, 2018
Theory of Computation
usergate2018
usermod
finite-automata
minimal-state-automata
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–
1
votes
1
answer
529
KLP MISHRA
Given {L: every 'a' is followed by "bb"} Design a DFA for LATE(L) and TRUNCATE(L) LATE(L) is obtained by removing the first symbol from L and TRUNCATE(L) is obtained by removing the last symbol from L Eg: If L is 00(0+1)*01 then LATE(L) will be 0(0+1)*01 and TRUNCATE(L) would be 00(0+1)*0
Given {L: every 'a' is followed by "bb"}Design a DFA for LATE(L) and TRUNCATE(L)LATE(L) is obtained by removing the first symbol from L and TRUNCATE(L) is obtained by rem...
Sourav_35
822
views
Sourav_35
asked
Jun 9, 2018
Theory of Computation
theory-of-computation
finite-automata
+
–
1
votes
1
answer
530
Peter Linz Edition 4 Exercise 2.1 Question 9 (Page No. 48)
Consider the set of strings on {$0,1$} defined by the requirements below. For each, construct an accepting dfa. (a) Every $00$ is followed immediately by a $1$. For example, the strings $101, 0010, 0010011001$ ... strings of length four or greater in which the leftmost three symbols are the same, but different from the rightmost symbol.
Consider the set of strings on {$0,1$} defined by the requirements below. For each, construct anaccepting dfa.(a) Every $00$ is followed immediately by a $1$. For example...
Sourav_35
8.5k
views
Sourav_35
asked
Jun 9, 2018
Theory of Computation
theory-of-computation
peter-linz
peter-linz-edition4
finite-automata
+
–
1
votes
1
answer
531
Conversion of DFA to NFA
Q.) Given an arbitrary DFA with 2N states, what will be the number of states of the corresponding NFA? a) N x N b) 2N c) 2N d) N! Now, as we know that -> no. of states in minimal DFA >= no. of states in NFA. So, anything less ... can be the answer but the answer which I found in the source is option (b) i.e 2N. Please suggest the proper explanation for this problem.
Q.) Given an arbitrary DFA with 2N states, what will be the number of states of the corresponding NFA?a) N x Nb) 2Nc) 2Nd) N!Now, as we know that - no. of states in minim...
garvit_vijai
5.4k
views
garvit_vijai
asked
Jun 9, 2018
Theory of Computation
finite-automata
theory-of-computation
+
–
0
votes
1
answer
532
theory of computation
What is the maximum number of productions possible in the regular grammar equivalent to n-state DFA over input alphabet {a,b,c} where qi is always initial state?
What is the maximum number of productions possible in the regular grammar equivalent to n-state DFA over input alphabet {a,b,c} where qi is always initial state?
pream sagar
386
views
pream sagar
asked
Jun 7, 2018
Theory of Computation
finite-automata
+
–
0
votes
1
answer
533
Theory of computation
Prince Sindhiya
377
views
Prince Sindhiya
asked
Jun 6, 2018
Theory of Computation
theory-of-computation
finite-automata
+
–
0
votes
2
answers
534
Toc deterministic infinite automaton
Shivani gaikawad
307
views
Shivani gaikawad
asked
Jun 6, 2018
Theory of Computation
finite-automata
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–
0
votes
1
answer
535
Toc NFa to DFA
Shivani gaikawad
422
views
Shivani gaikawad
asked
Jun 6, 2018
Theory of Computation
minimization
finite-automata
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–
0
votes
1
answer
536
Toc dfa
Shivani gaikawad
735
views
Shivani gaikawad
asked
Jun 6, 2018
Theory of Computation
finite-automata
+
–
1
votes
2
answers
537
Toc dfa
The minimum number of state in the DFA for the language $L = \{ w \mid (n_a(w)+2n_b(w))mod \hspace{0.1cm} 3<2 \} $ is
The minimum number of state in the DFA for the language $L = \{ w \mid (n_a(w)+2n_b(w))mod \hspace{0.1cm} 3<2 \} $ is
Shivani gaikawad
968
views
Shivani gaikawad
asked
Jun 5, 2018
Theory of Computation
theory-of-computation
finite-automata
minimal-state-automata
+
–
2
votes
2
answers
538
Toc NFa
Shivani gaikawad
301
views
Shivani gaikawad
asked
Jun 5, 2018
Theory of Computation
theory-of-computation
finite-automata
minimal-state-automata
+
–
0
votes
2
answers
539
Toc DFA
The minimum number of state in the DFA for the language $L = \{ w \mid w \in \{a,b\}^* \text{ w has exactly two a's and at least two b's} \}$ is $9$ $10$ $16$ None
The minimum number of state in the DFA for the language $L = \{ w \mid w \in \{a,b\}^* \text{ w has exactly two a's and at least two b's} \}$ is $9$$10$$16$None
Shivani gaikawad
474
views
Shivani gaikawad
asked
Jun 5, 2018
Theory of Computation
theory-of-computation
finite-automata
minimal-state-automata
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–
0
votes
0
answers
540
Automata
Statement-no. of transition defined states in a DFA =|€|. Where |€|= length of input alphabet. Why?
Statement-no. of transition defined states in a DFA =|€|. Where |€|= length of input alphabet. Why?
AIkiran01
202
views
AIkiran01
asked
Jun 1, 2018
Theory of Computation
theory-of-computation
finite-automata
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–
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