1. Give a regular expression for the following languages: {ab¨w.123, WE {a, (d) L = {w € {0, 1} * : w has exactly one pair of consecutive zeros}. (e) L = {w E {0, 1} + : w ends with 01}. (f) L {w € {0, 1}+: no(w) = even}. Where no(w) is the number of 0's in w}

Database System Concepts
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ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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1. Give a regular expression for the following languages:
{ab¨w.123, W € ₁a,
(d) L = {w € {0, 1} * : w has exactly one pair of consecutive zeros}.
(e) L = {w E {0, 1} + : w ends with 01}.
(f) L {w E {0, 1}+: no(w) = even}. Where no(w) is the number of 0's in
W}
Transcribed Image Text:1. Give a regular expression for the following languages: {ab¨w.123, W € ₁a, (d) L = {w € {0, 1} * : w has exactly one pair of consecutive zeros}. (e) L = {w E {0, 1} + : w ends with 01}. (f) L {w E {0, 1}+: no(w) = even}. Where no(w) is the number of 0's in W}
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