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QUESTION 5 Briefly, what does the REDUCE operation in a Shift-Reduce parser do? O a. Multiply the top stack item by a power of 2.
QUESTION 5 Briefly, what does the REDUCE operation in a Shift-Reduce parser do? O a. Multiply the top stack item by a power of 2. O b. Push a symbol and advance to the next symbol. O c. Clear the stack. O d. Terminate parsing, moving the AST into the output register. O e. Divide the top stack item by a power of 2. Of. Run a production in reverse, popping its right-hand side and pushing its left-hand side. QUESTION 6 How fast are practical parsers? O a. Constant time. O b. Logarithmic time. O c. Linear time. O d. Log-linear time. O e. Quadratic time. O f. Cubic time. O g. Exponential time
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