**Stack Interface and Operations in Java Programming**Consider the following interface that defines the operations of a stack data structure:```javapublic interface Stack { public boolean isEmpty(); public void push(E element); public E pop(); public E getTop();}```Assume `makeStringStack()` returns a reference to an object implementing `Stack` and `makeCharStack()` returns a reference to an object implementing `Stack`.In the following sequence of statements, identify any statements that are invalid and provide an explanation.```javaStack stringStack = makeStringStack();stringStack.push("coffee");stringStack.push('T');Stack characterStack = makeCharStack();characterStack.push(new Character('Q'));characterStack.push(new Character('R'));characterStack.push("S");```### Analysis:1. **Valid Statements:** - `stringStack.push("coffee");` is valid because "coffee" is a `String`, matching the `Stack` type. - `characterStack.push(new Character('Q'));` and `characterStack.push(new Character('R'));` are valid because both 'Q' and 'R' are `Character` objects, matching the `Stack` type.2. **Invalid Statement:** - `stringStack.push('T');` is invalid because 'T' is a `Character`, not a `String`. The `Stack` requires a `String` type. - `characterStack.push("S");` is invalid because "S" is a `String`, not a `Character`. The `Stack` requires a `Character` type.This example illustrates the importance of type matching in generic interfaces to ensure type safety and avoid runtime errors in Java programming.

- The question is to select the incorrect statements and their reason being invalid.

Answered: 3. Consider the following interface…

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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5. The creeping problem occurs when a queue is implemented as an array. (a) Define the creeping problem. (b) Describe how to implement a queue as an array in order to avoid the creeping problem. (c) Write the C++ method Join for the new type of Queue described in (b) above.
solution for subpart 3
Assume class StackType has been defined to implement a stack data structure as discussed in your textbook (you may also use the stack data structure defined in the C++ STL). Write a function that takes a string parameter and determines whether the string contains balanced parentheses. That is, for each left parenthesis (if there is any) there is exactly one matching right parenthesis later in the string and every right parenthesis is preceded by exactly one matching left parenthesis earlier in the string. e.g. abc(c(x)d(e))jh is balanced whereas abc)cd(e)(jh is not. The function algorithm must use a stack data structure to determine whether the string parameter satisfies the condition described above. Edit Format Table 12pt v Paragraph v |BIU A v ev T? WP O words ....
i want the program in java
#include<bits/stdc++.h>using namespace std;#define MAX 1000 //Maximum size of stack class Stack{ int top;// to store top of stack public: int elements[MAX]; //Integer array to store elements Stack(){ //class constructor for initialization top=-1; } bool push(int x) { if(top>=(MAX-1)) //Condition for top when stack because full { cout<<"Stack is full\n"; return false; } else { ++top; //Increasing top value elements[top]=x; //storing it to element in to stack return true; }}int pop(){ if(top<0)// Condition for top when stack is empty { cout<<"stack is empty\n"; return INT_MIN; } else { int x=elements[top--];//poping out the element for stack by decreasing to element return x; }}int display(){if(top<0)//Condition for top when stack is empty { cout<<"Stack is…
Explain Please please
You will create two programs. The first one will use the data structure Stack and the other program will use the data structure Queue. Keep in mind that you should already know from your video and free textbook that Java uses a LinkedList integration for Queue. Stack Program Create a deck of cards using an array (Array size 15). Each card is an object. So you will have to create a Card class that has a value (1 - 10, Jack, Queen, King, Ace) and suit (clubs, diamonds, heart, spade). You will create a stack and randomly pick a card from the deck to put be pushed onto the stack. You will repeat this 5 times. Then you will take cards off the top of the stack (pop) and reveal the values of the cards in the output. As a challenge, you may have the user guess the value and suit of the card at the bottom of the stack. Queue Program There is a new concert coming to town. This concert is popular and has a long line. The line uses the data structure Queue. The people in the line are objects…
Modify the C++ class for the abstract stack type shown belowto use a linked list representation and test it with the same code thatappears in this chapter. #include <iostream.h>class Stack {private: //** These members are visible only to other//** members and friends (see Section 11.6.4)int *stackPtr;int maxLen;int topSub;public: //** These members are visible to clientsStack() { //** A constructorstackPtr = new int [100];maxLen = 99;topSub = -1;}~Stack() {delete [] stackPtr;}; //** A destructorvoid push(int number) {if (topSub == maxLen)cerr << "Error in push--stack is full\n";else stackPtr[++topSub] = number;}void pop() {if (empty())cerr << "Error in pop--stack is empty\n";else topSub--;}int top() {if (empty())cerr << "Error in top--stack is empty\n";elsereturn (stackPtr[topSub]);}int empty() {return (topSub == -1);} }

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