# How do you make a regular expression from finite automata?

## How do you make a regular expression from finite automata?

Generating regular expression from Finite Automata

1. There are two methods to convert FA to regular expression – State Elimination Method –
2. Example :-
3. Solution :-
4. Arden’s Theorem – Let P and Q be 2 regular expressions.
5. Assumptions –
6. Using Arden’s Theorem to find Regular Expression of Deterministic Finite automata –

Is regular expression accepted by finite automata?

Regular expression is the language which is used to describe the language and is accepted by finite automata. Regular expressions are the most effective way to represent any language. Let Σ be an alphabet which denotes the input set.

Which of the following is useful for converting finite automata into a regular expression?

Explanation: Thompson construction algorithm is an algorithm in automata theory used to convert a given regular expression into NFA. Similarly, Kleene algorithm is used to convert a finite automaton to a regular expression.

### What is the regular expression for the finite state machine?

Regular expressions describe patterns which can be recognized by finite state machines (FSM). It is possible to algorithmically construct a FSM that corresponds to a given regular expression. A FSM can be described by a transition table (program), which can be represented by a string.

What is a regular expression for following automata?

The regular expression will be: r.e. = (a + b)*

What is a regular expression state the rules which define regular expression?

A regular expression can also be described as a sequence of pattern that defines a string. Regular expressions are used to match character combinations in strings. String searching algorithm used this pattern to find the operations on a string.

#### Which of the following languages have built in regular expression support *?

Discussion Forum

Que. Which of the following languages have built in regexps support?
b. Java
c. Python
d. C++