Use procedures PUSH(S,X), POP(S,X), PRINT(X) and EMPTY_STACK(S) (as described in illustrative problem 4.1) and TOP_OF_STACK(S), which returns the top element of stack S, to write pseudo codes to i) assign X to the bottom element of stack S, leaving the stack empty; ii) assign X to the bottom element of the stack, leaving the stack unchanged; iii) assign X to the nth element in the stack (from the top), leaving the stack unchanged

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
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Use procedures PUSH(S,X), POP(S,X), PRINT(X) and
EMPTY_STACK(S) (as described in illustrative problem 4.1) and
TOP_OF_STACK(S), which returns the top element of stack S, to write pseudo
codes to
i) assign X to the bottom element of stack S, leaving the stack empty;
ii) assign X to the bottom element of the stack, leaving the stack unchanged;
iii) assign X to the nth element in the stack (from the top), leaving the stack unchanged

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