2. Consider scanning literals for representing carbohydrates in chemistry. Such literals consist of one or more...

 

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2. Consider scanning literals for representing carbohydrates in chemistry. Such literals consist of one or more parts, each consisting of C, H, or 0, optionally followed by a decimal integer greater than 1 (it can greater than 9). You may use DO to mean decimal digits 0-9, D1 to mean 1-9, and D2 to mean 2-9. (This is a computer science question, not a chemistry question. In particular, this specification allows bogus chemical formulas such as H42.) a. Give a regular expression for these carbohydrate literals. You may use the iteration operators and + and ?. * b. Give a DFA that recognizes exactly these literals (no e edges). Don't forget to mark the start state and all accepting states. Make sure that you don't accept the empty string! 2. Consider scanning literals for representing carbohydrates in chemistry. Such literals consist of one or more parts, each consisting of C, H, or 0, optionally followed by a decimal integer greater than 1 (it can greater than 9). You may use DO to mean decimal digits 0-9, D1 to mean 1-9, and D2 to mean 2-9. (This is a computer science question, not a chemistry question. In particular, this specification allows bogus chemical formulas such as H42.) a. Give a regular expression for these carbohydrate literals. You may use the iteration operators and + and ?. * b. Give a DFA that recognizes exactly these literals (no e edges). Don't forget to mark the start state and all accepting states. Make sure that you don't accept the empty string!

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a Regular expression for carbohydrate literals The regular expression for carbohydrate literals can ... View the full answer