Given the following code to populate a Queue variable, queue, and a Stack variable, stack, define a function called IsPalindrome that uses queue's remove method and the stack's pop method to check if the given String variables, was a palindrome. for (Character c: s.toCharArray()) { } queue.add(c); stack.add(c); System.out.println (Is Palindrome (queue, stack)); public static boolean Is Palindrome (Queue queue,

Given the following code to populate a Queue variable, queue, and a Stack variable, stack, define a function called IsPalindrome that uses queue's remove method and the stack's pop method to check if the given String variables, was a palindrome. for (Character c: s.toCharArray()) { } queue.add(c); stack.add(c); System.out.println (Is Palindrome (queue, stack)); public static boolean Is Palindrome (Queue queue,

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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Use procedures PUSH(S,X), POP(S,X), PRINT(X) andEMPTY_STACK(S) (as described in illustrative problem 4.1) andTOP_OF_STACK(S), which returns the top element of stack S, to write pseudocodes toi) 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
With illustrations, distinguish between Stack and Queues and write an algorithm for insertion and deletion in stack and queue (PUSH Operation/POP Operation).
Short answer: Answer the following in your own words: 1) Your friend says they implemented a stack as a linked list with reference pointers to both a head and the tail node (i.e. they implemented a stack as a double endedlinked list). They said this significantly improved the performance for all functions (push, pop, search, and update). Are they correct? Why or why not?
The queues that function as a stack together work on X) and POP(S, Y), where S is purportedly a stack, X is the element to be added to S, and Y is the element discarded from S. Assume that only queues are accessible to ADT's ENQUEUE, DEQUEUE, and EMPTYQUEUE operations.Show how your function operates on a list of items (a, b, and c) that will be used as a stack by the queues Q1 and Q2.
Short answer Answer the following in your own words: Your friend says they implemented a stack as a linked list with reference pointers to both a head and the tail node (i.e. they implemented a stack as a double ended linked list). They said this significantly improved the performance for all functions (push, pop, search, and update). Are they correct? Why or why not? Another friend implemented a queue as a linked list with only a head pointer (no tail node). She said this made performance of all functions (insert, remove, search, and update) categorically equal to a queue as a linked list with a head and a tail node. Is she correct? Why or why not?
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There is one stacks and one queue q and then following operations are performed upon these two. Push A, enqueue B, push C, pop, pop, enqueue D, push E, dequeue, enqueue F .What is the total number of elements, which are left in the queue and stack in the end.
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CODE IN PYTHON build the queue data structure using linked list for the following elements ['D','A','T','A' S,'T','R',U',C','U',T','R','E','S'] with the following operations (i)enqueue (ii)dequeue (iii)display (iv)isnull
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