State diagram for an NFA b a a q0 b,ɛ q2 b ql

Computer Science Consider the following two grammars with alphabet a and b i. (b*ab*a)*b* ii. (b*ab*a)*b*(b*ab*a)*b* Are there any strings are generated by one of the grammars and cannot be generated by the other? If there are more than one such string, how do you describe them.

For this exercise, we will work on a regular grammar to recognize a comment in a C++ or Java program. A comment starts with /* and ends with */ and anything else in between can be ignored. We won't consider the case of nested comments. Keep in mind that you can have any number of * characters at the beginning, at the end, and in between. • Write a regular grammar recognizing such comments. • Draw the finite state machine for this grammar. • Draw a table for this grammar such as the ones for table-driver scanners in the class notes and in the book.

Write a BNF grammar describing the syntax of BNF; i.e., define the syntax of BNF itself using BNF. Use a pair of single quotes to use meta symbols like | and -> as terminal symbols, e.g., '|' and '->'. You may assume that non-terminals such as <identifier> and <special-symbol> are already defined.