Question:
For the computation, choose the sequence of following tasks:
A. Regular Expression,
B. NFA,
C. Tokens,
D. Problem,
E. DFA.
For the computation, choose the sequence of following tasks:
A. Regular Expression,
B. NFA,
C. Tokens,
D. Problem,
E. DFA.
A. Regular Expression,
B. NFA,
C. Tokens,
D. Problem,
E. DFA.
Show Hint
In lexical analysis, the common sequence is problem, regular expression, NFA, DFA and tokens.
Updated On: Jun 6, 2026
- A, D, B, C, E
- D, A, B, E, C
- E, B, D, A, C
- B, E, D, C, A
Show Solution
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The Correct Option is B
Solution and Explanation
Concept:
In computation and lexical analysis, a problem is first defined, then patterns are written using regular expressions, then automata are constructed and finally tokens are generated.
Step 1: Problem.
First, the computational problem is identified. \[ \text{First step}=D \]
Step 2: Regular Expression.
The required pattern is expressed using regular expression. \[ \text{Second step}=A \]
Step 3: NFA.
The regular expression is converted into NFA. \[ \text{Third step}=B \]
Step 4: DFA.
NFA is converted into DFA for deterministic processing. \[ \text{Fourth step}=E \]
Step 5: Tokens.
Finally, tokens are generated or recognized. \[ \text{Fifth step}=C \] \[ \therefore \text{Correct Answer is (B)} \]
In computation and lexical analysis, a problem is first defined, then patterns are written using regular expressions, then automata are constructed and finally tokens are generated.
Step 1: Problem.
First, the computational problem is identified. \[ \text{First step}=D \]
Step 2: Regular Expression.
The required pattern is expressed using regular expression. \[ \text{Second step}=A \]
Step 3: NFA.
The regular expression is converted into NFA. \[ \text{Third step}=B \]
Step 4: DFA.
NFA is converted into DFA for deterministic processing. \[ \text{Fourth step}=E \]
Step 5: Tokens.
Finally, tokens are generated or recognized. \[ \text{Fifth step}=C \] \[ \therefore \text{Correct Answer is (B)} \]
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