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Write the RE for identifiers that can consist of any sequence of letters (l) or digit...

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Question

Programming

Write the RE for identifiers that can consist of anysequence of letters (l) or digit (d) or \"_\"
but the first char must be a letter and the last charcannot be a \"_\" (10)

Answer & Explanation Solved by verified expert
4.3 Ratings (519 Votes)
RE is AZazAZazAZaz09AZaz09 What each word signify start of string beginning of character group az any lowercase letter AZ any uppercase letter 09 any digit underscore end of character group zero or more of the given characters or operation used for    See Answer
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