Construct a regular expression that recognizes the following language of strings over the alphabet {0 1}:

The language consisting of the set of all bit strings that start with 00 or end with 101 (or both).

Syntax

The union is expressed as R|R, star as R*, plus as R+, concatenation as RR.

Epsilon is not supported but you can write R? for the regex (R|epsilon).

Question

Computers & Technology

Alicia Matthews

29 July, 14:34

Construct a regular expression that recognizes the following language of strings over the alphabet {0 1}:

The language consisting of the set of all bit strings that start with 00 or end with 101 (or both).

Syntax

The union is expressed as R|R, star as R*, plus as R+, concatenation as RR.

Epsilon is not supported but you can write R? for the regex (R|epsilon).

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Answers (1)

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Trystan Bradshaw · Answer 1

00 (01) * +| (01) * +101|00 (01) * +101

Rest detail is in explanation.

Explanation:

(01) * means all the strings comprising of 0 and 1

when we add + the set includes empty sets as well. and for or we use union, and this can be done using the | sign.

And for concatenation, we have like 00 (01) * etc. Hence, the above regular expression.