1. Scan P from left to right and repeat Steps 3 to 6 for each element of P until the stack is empty. 2. If an operand is encountered, add it to Q. 3. If a left parenthesis is encountered, push it onto stack. 4. If an operator & is encountered, then: (a) Repeatedly pop from stack and add to Q each operator (on the which has the same precedence as, or higher precedence than O. (b) Add O to stack. 5. If a right parenthesis is encountered, then: (a) Repeatedly pop from stack and add to Q (on the top of stack until a left parenthesis is top of stack), encountered. (b) Remove the left parenthesis. [Do not add the left parenthesis to stack.] 6. Exit.

1. Scan P from left to right and repeat Steps 3 to 6 for each element of P until the stack is empty. 2. If an operand is encountered, add it to Q. 3. If a left parenthesis is encountered, push it onto stack. 4. If an operator & is encountered, then: (a) Repeatedly pop from stack and add to Q each operator (on the which has the same precedence as, or higher precedence than O. (b) Add O to stack. 5. If a right parenthesis is encountered, then: (a) Repeatedly pop from stack and add to Q (on the top of stack until a left parenthesis is top of stack), encountered. (b) Remove the left parenthesis. [Do not add the left parenthesis to stack.] 6. Exit.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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