1. Using any of the ADTS from the class implement a basic calculator to evaluate a simple expression string. The expression string contains only non-negative integers, 4', ", *, ' operators, and open '(' and closing parentheses ')'. The integer division should truncate toward zero. You may assume that the given expression is always valid. Note: You are not allowed to use any built-in function which evaluates strings as mathematical expressions, such as eval ().You'll have to fully implement the ADT, for example if you are using a Queue and in the below hint, you'll have to implement the Queue class that will be used. You are not allowed to use any implementations from java.utils.* Examples: Input: s = "1+1" Output: Input: s = "(2+6*3+5-(3*14/7+2)*5) +3" Output: -12 Input: s = "2* (5+5*2)/3+ (6/2+8)" Output: 21 Hint (not mandatory to be used): use stack with the Reverse Polish Notation. Reverse Polish Notation or Postfix notation is a mathematical notation in which operators follow their operands. For example infix notation: 3+5 is represented as 3,5,+ in postfix notation. Another example, infix notation 2* (5+5*2)/3+ (6/2+8) is represented as 2, 5,5,2,*,+,*,3,/,6,2,7,8,+,+in postfix notation. 2.

1. Using any of the ADTS from the class implement a basic calculator to evaluate a simple expression string. The expression string contains only non-negative integers, 4', ", , ' operators, and open '(' and closing parentheses ')'. The integer division should truncate toward zero. You may assume that the given expression is always valid. Note: You are not allowed to use any built-in function which evaluates strings as mathematical expressions, such as eval ().You'll have to fully implement the ADT, for example if you are using a Queue and in the below hint, you'll have to implement the Queue class that will be used. You are not allowed to use any implementations from java.utils. Examples: Input: s = "1+1" Output: Input: s = "(2+63+5-(314/7+2)5) +3" Output: -12 Input: s = "2 (5+52)/3+ (6/2+8)" Output: 21 Hint (not mandatory to be used): use stack with the Reverse Polish Notation. Reverse Polish Notation or Postfix notation is a mathematical notation in which operators follow their operands. For example infix notation: 3+5 is represented as 3,5,+ in postfix notation. Another example, infix notation 2 (5+52)/3+ (6/2+8) is represented as 2, 5,5,2,,+,*,3,/,6,2,7,8,+,+in postfix notation. 2.

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

See similar textbooks

Similar questions

Why does the Number Class from this slide need to be abstract?
Add a new Java class to your project by right clicking on the src folder in the Project pane and select New > Java Class.Enter Hours as the name for this class, and IntelliJ will add it to the files in the src folder for your project. Remember tocopy and insert the standard heading for the main method as you did for Program 2.Write a program that prompts the user to enter a number of hours, and produces the equivalent number of days as a wholenumber along with the number of hours left over. Assume that a day has exactly 24 hours. The following example showsthe format to use for your output, where the input entered by the user is underlined.Enter the number of hours: 100100 hours is 4 days, plus 4 hours.Define Variables: The number of hours will be a whole number, and we would like to obtain results as whole numbers ofdays and hours, so use the int data type to declare the variables to hold the numbers of hours input, as well as the results(the number of days and number of hours left…
new JAVA code can only be added between lines 15 and 17. as seen in image.
Please fix these in the above splution, it is not fully correct. "You're invited" needs to be formatted correctly. With a larger font, using BS classes only. Use Bootstrap classes to make a circular image with a border - around the image only. "Don't tell the cats" color should be set with BS classes.
Write in Java! Write the Widget class. a. A widget has a name and price. b. The default for name should be “widget” c. Write a constructor (not the no-args), all getters and setters. d. Add a toString method. e. Create an object of type Widget.
PLEASE ENSURE TO USE THE FRAMEWORK PROVIDED IN THE IMAGES, AND THAT IT WORKS WITH THE TESTER CLASS. Write a class RangeInput that allows users to enter a value within a range of values that is provided in the constructor. An example would be a temperature control switch in a car that allows inputs between 60 and 80 degrees Fahrenheit. The input control has “up” and “down” buttons. Provide up and down methods to change the current value. The initial value is the midpoint between the limits. As with the preceding exercises, use Math.min and Math.max to limit the value. Write a sample program that simulates clicks on controls for the passenger and driver seats.
Solve this question using java language. you have to read the information from a file then print them in a file please read the instructour carefully, also look at the attach images to help you to solve it. This tips will help you What You Must Implement:You must define a class named MediaRental that implements the MediaRentalInt interface functionality(index A). You must define classes that support the functionality specified by the interface. The followingspecifications are associated with the project:1. Define a class named MediaRental. Feel free to add any instance variables you understand are needed or anyprivate methods. Do not add any public methods (beyond the ones specified in the MediaRentalInt interface).2. The media rental system keeps track of customers and media (movies ,music albums and games). A customerhas a name, address as string , a plan and two lists. One list represent the media the customer is interested inreceiving and the second one represents the media…
Write a method that takes two string parameters, and tells whether the first is a substring of the second. You can't use framework methods that do this for you, such as indexOf(). In other words, you have to write the loops yourself. But, you can use the primitive methods such as charAt(). Also analyze the program's performance and state the big-O complexity of your method. Provide a screenshot of the code working.
new java code can only be added between lines 22 - 24. as seen in image.
I was asked to add the three types of comments to this class, each consisting of the same statement (this statement is also printed once). The output/print, block comment, and single line comment has all been marked correct. The Javadoc comment, however, has not. I asked this question earlier and tried implementing that solution, however, it did not work. What should I do to make it work?
Are there obvious improvements that could be made here with respect the software design for Squares and Circles? What programming constructs were you familiar with, and which did you need to look up? Assume we used a separate array for Squares and for Circles rather than one unifying Object array. How would this complicate the task of adding a new Shape (say, a Triangle) to our ObjectList class?
With your askForYesNo method, how would you get the same result with only using one if/else if/else statement?? (IN JAVA PROGRAMMING) You also need to fix up your styling: All your method comments need to be in a block comment (/** comment */) and should include the parameters taken and values returned All your variables need to have a line comment (//comment) next to them explaining what they are going to be used for import java.util.Scanner; /** * 4.3CR User Input Functions * a functions to read a number within a range, and read more natural boolean values from the user * * @author MEHAKPREET KAUR * @version 04/08/2021 */ public class UserInput { // method to diplay askForInt public static int askForInt(Scanner in, String ask, int min, int max){ int value; //value entered by user System.out.print(ask + "(" + min + "-" + max + "): "); value = in.nextInt(); //loop check for invalid value while(value < min || value > max){…