Recall the Stack ADT. It has the following operations: push(item): adds item to the top of the stack pop) : removes and returns the top item in the stack peek() : returns the top item in the stack (but does NOT remove it) size() : returns the number of items in the queue Write pseudocode for a function called remove(S, item) that takes a stack S and a value called item as input. The function removes all occurrences of item in S and returns the number of occurrences. The order of items in the modified stack must be the same as their original ordering (but with all occurrences of item absent). You can ONLY use basic control flow structures and Stack operations. You can use multiple stacks if you wish. Examples: S:= empty stack S.push('a'), S.push('t'), S.push('a'), S.push('u'), S.push('p') assert: the stack S now looks like ['a', 't', 'a', 'u', 'p'] (where 'p' is the top value) remove(S, 'a') assert: n is 2 assert : the stack S now looks like ['t', 'u', 'p'] (where 'p' is the top value) n = remove(S, 'q') assert: n is 0 and S is unchanged n =

Recall the Stack ADT. It has the following operations: push(item): adds item to the top of the stack pop) : removes and returns the top item in the stack peek() : returns the top item in the stack (but does NOT remove it) size() : returns the number of items in the queue Write pseudocode for a function called remove(S, item) that takes a stack S and a value called item as input. The function removes all occurrences of item in S and returns the number of occurrences. The order of items in the modified stack must be the same as their original ordering (but with all occurrences of item absent). You can ONLY use basic control flow structures and Stack operations. You can use multiple stacks if you wish. Examples: S:= empty stack S.push('a'), S.push('t'), S.push('a'), S.push('u'), S.push('p') assert: the stack S now looks like ['a', 't', 'a', 'u', 'p'] (where 'p' is the top value) remove(S, 'a') assert: n is 2 assert : the stack S now looks like ['t', 'u', 'p'] (where 'p' is the top value) n = remove(S, 'q') assert: n is 0 and S is unchanged n =

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter18: Stacks And Queues

Section: Chapter Questions

Problem 1TF

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A SpecialStackTM is a stack modified to support the following two operations: PUSHCLEAR(v) successively pops consecutive items from the top of the stack that are less than u, then pushes v onto the stack. POP() deletes the item at the top of the stack. Assume these operations are implemented using a singly-linked list. PUSHCLEAR(v) iter- ates through the linked list to pop the applicable items and then adds v to the beginning. POP() deletes the first item. (a) Describe the ordering of values on the stack. (b) Explain how a single call to PUSHCLEAR(V) could take (n) time. (c) If we assume that every operation takes linear time, we get a naive bound of O(n²) on the total runtime. But this doesn't consider the fact that these expensive operations happen infrequently so let's analyze it more closely. Show that any sequence of n operations takes O(n) time. -
A stack is very useful in situations when data have to be stored and then retrieved in the —- order. A) same B) reverse C) ascending D) descending
Answer it fast and correct. Don't stuck. i ll rate Fill in the underlines below to complete a function template, reverseStack, that takes as a parameter a stack object and uses a queue object to reverse the elements of the stack. C++ code Answer: template <class Type> void reverseStack(stackType<Type> &s) { linkedQueueType<Type> q; Type elem; while (_________________) // The stack is not empty. { // Copy the top element of the stack into the queue //and remove it from the stack. elem = _________________; _________________; _________________; } while (_________________) // The queue is not empty. { // Copy the front element of the queue into the stack //and remove it from the queue. elem = _________________; _________________; _________________; } }
Write a structure to represent a Node in a singly linked-list-based stack similar to the onediscussed in class. Your stack will store integer values. Your program will read a series of integers(until the user enters a non-integer) and store them in a stack, then print them in the reverse order;You will write three functions to assist with this task: push, printStack, and deleteStack.The function push takes a number and a Node and adds the number to the head (top) of thestack by creating a new Node (using malloc) and returning a pointer to this Node. This new nodeis now the top of your stack.The function printStack will need to iterate through your stack and print each one (5 spacesper number, left-aligned), with a new line following the nal number. You will need a pointer thatyou update to the next Node each time you print one. Since you add new items to the top of thestack, the newest elements will be printed rst, giving the reverse-order behavior requested.The function deleteStack…
Can you explain in detail, line by line, what the attached algorithm is doing? I need further understanding. For further clarification the prompt asks the following: Write an algorithm Replace that takes a stack and two items. If the first item is in the stack, replace it with the second item, leaving the rest of the stack unchanged.
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.
The Nth Fibonacci number is defined as the sum of the two previous Fibonacci numbers where the 0th and 1st Fibonacci numbers are defined as 1. What is the maximum size of the stack when this function is called with the argument 5? What is the maximum size of stack when the function is called with n when n >= 4 (expression in term of n) int Fibonacci( int n ) { return (n <= 1) ? 1 : Fibonacci( n - 1 ) + Fibonacci( n - 2 ); }
Implement a method transfer in class LinkedStack. This method should transfer all elements of a stack sourceS to another stack targetS so that the element that starts at the top of sourceS is the first one to be inserted in targetS, and the element at the bottom of sourceS ends up at the top of targetS. The operation should result in sourceS being an empty stack. Test this method in the main method of LinkedStack. package stacks;public class LinkedStack<E> implements Stack<E> {/** The primary storage for elements of the stack */private SinglyLinkedList<E> list = new SinglyLinkedList<>(); // an empty list/** Constructs an initially empty stack. */public LinkedStack() { } // new stack relies on the initially empty list@Overridepublic int size() { return list.size(); }@Overridepublic boolean isEmpty() { return list.isEmpty(); }@Overridepublic void push(E element) { list.addFirst(element); }@Overridepublic E top() { return list.first(); }@Overridepublic E pop() {…
A CapnStackSparrow is an extended stack that supports four main operations: the standard Stack operations push(x) and pop() and the following non-standard operations:• max(): returns the maximum value stored on the Stack.• ksum(k): returns the sum of the top k elements on the Stack.The zip file gives an implementation SlowSparrow that implements these operations so that push(x) and pop() each run in ?(1) time, but max() and ksum(k) run in ?(?) time. For this question, you should complete the implementation of FastSparrow that implements all four operations in ?(1) (amortized) time per operation. As part of your implementation, you may use any of the classes in the Java Collections Framework and you may use any of the source code provided with the Java version of the textbook. Don't forget to also implement the size() and iterator() methods. Think carefully about your solution before you start coding. Here are two hints:1. don't use any kind of SortedSet or SortedMap, these all require…
Implement a method transfer in class LinkedStack. This method should transfer all elements of a stack sourceS to another stack targetS so that the element that starts at the top of sourceS is the first one to be inserted in targetS, and the element at the bottom of sourceS ends up at the top of targetS. The operation should result in sourceS being an empty stack. Test this method in the main method of LinkedStack.
You are given N elements and your task is to Implement a Stack in which you can get a minimum element in O(1) time. Example 1: Input: push(2) push(3) pop() getMin() push(1) getMin() Output: 2 1 Explanation: In the first test case for query push(2) Insert 2 into the stack. The stack will be {2} push(3) Insert 3 into the stack. The stack will be {2 3} pop() Remove top element from stack Poped element will be 3 the stack will be {2} getMin() Return the minimum element min element will be 2 push(1) Insert 1 into the stack. The stack will be {2 1} getMin() Return the minimum element min element will be 1.
Need help with python code. Write a LikedStack . Test it by: Add numbers from 7 to 22 in the stack. Print the length of the stack Check if the stack is empty Show the item on the top of the stack Remove the last item in the stack Add 45 to the stack Remove all items in the stack Check if the stack is empty """File: linkedstack.pyAuthor: Ken Lambert"""from node import Nodefrom abstractstack import AbstractStackclass LinkedStack(AbstractStack):"""A link-based stack implementation."""# Constructordef __init__(self, sourceCollection = None):"""Sets the initial state of self, which includes thecontents of sourceCollection, if it's present."""# Accessor methodsdef __iter__(self):"""Supports iteration over a view of self.Visits items from bottom to top of stack."""def visitNodes(node):"""Adds items to tempList from tail to head."""def peek(self):"""Returns the item at the top of the stack.Precondition: the stack is not empty.Raises: KeyError if the stack is empty."""if self.isEmpty():#…