Question: You are given the following alphabet:{ a, b, c, d}. Write a regular expression describing the set of all identifiers (i.e., strings) having at most

You are given the following alphabet:{ a, b, c, d}.

  1. Write a regular expression describing the set of all identifiers (i.e., strings) having at most 2 occurrences of the letter c. For example, the identifier "abbcdaac" would belong to this set, but the identifier "aabcdaacc" would not.
  2. Write a regular expression describing the set of all identifiers having at least 2 occurrences of the letter c.

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