Evaluate the following Postfix expression to find the final value. Trace the evaluation using class PostfixEvaluator. Show the operand stack each time it is modified. (Clearly show all steps) 2 3 4 * + 9 7 - /

Evaluate the following Postfix expression to find the final value. Trace the evaluation using class PostfixEvaluator. Show the operand stack each time it is modified. (Clearly show all steps) 2 3 4 * + 9 7 - /

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter11: Inheritance And Composition

Section: Chapter Questions

Problem 28SA

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Recursion Practice Welcome back! In this lab, we will be reviewing recursion by practicing with some basic recursion problems. Objectives Increase familiarity with recursive logic by working through several recursive problems. Taking into consideration a few corner cases through analyzing the test cases. Using a regex expression that will remove punctuation. Getting Started This lab includes the following .java file: L4/└── Recursion.java└── Main.java**Main.java is a read-only file used for testing. It is not included in the starter jar.Here is the starter jar if you would like to code in a different environment: L4.jar. Please complete ALL functions. Make sure to read the description for each function carefully. Do not include any for or while loops in your methods. These can all be completed in a purely recursive style, so do it recursively! In the spirit of incremental development, implement each method one at a time, look at the test cases and take into consideration what is…
Write a recursive function that displays an integer value reversely on the console using the following header:def reverseDisplay(value):For example, invoking reverseDisplay(12345) displays 54321. Write a testprogram that prompts the user to enter an integer and displays its reversal.
Oct 13 8:38 A
True or False: (a) In a debugger, we can choose whether to step into, step over, or step out of a particular method call. (b) Debuggers, tests, and println() statements are all legitimate ways to help us find errors in our code.
[Fish Tank] You play with a clown fish that has an initial size so. The fish can eat other fish in a tank organized in m columns and n rows. The fish at column i and row j has a positive size si,j. When your fish eats another fish, it grows by that amount. For example, if your clown fish has a size of 10 and eats a fish of size 5, it becomes of size 15. You cannot eat a fish that is bigger than your size. The game starts by eating any fish in the first (left-most) column that is not bigger than yours. After that, you advance one column at a time by moving right. You have only three allowed moves. You either stay at the same row, move one row higher or one row lower. You will always move to the right. Thus, you will make exactly m moves to advance from left to right. Your goal is to exit the fish tank from the right with the biggest possible size. The figure below shows an example with the best answer highlighted. In this case, the final fish size is 71 (10+8+7+24+22). You are required…
(Convert decimals to fractions)Write a program that prompts the user to enter a decimal number and displays the number in a fraction.Hint: read the decimal number as a string, extract the integer part and fractional part from the string, and use the Rational class in LiveExample 13.13 to obtain a rational number for the decimal number. Use the template athttps://liveexample.pearsoncmg.com/test/Exercise13_19.txt The problem can not use BigInteger //Below is the Rational LiveExample 13.13 that goes with the problem/question; notice "long" instead of "BigInteger" class Rational extends Number implements Comparable<Rational> { // Data fields for numerator and denominator private long numerator = 0; private long denominator = 1; /** Construct a rational with default properties */ public Rational() { this(0, 1); } /** Construct a rational with specified numerator and denominator */ public Rational(long numerator, long denominator) { long gcd = gcd(numerator,…
Edit only the class definition. DO NOT CHANGE the code given under 'main' please. Steps: Additionally implement any Python Magic/Dunder methods such that instances of the class minimally:1. Support addition, subtraction, equality operations and the built-in abs function2. Are Iterable i.e., support for loops and star arguments for unpacking into function calls3. Support a string representation that displays the class name and coordinates stored by the instance: i.e. for an object initialized as: Vector(0, 3), the string representation should be ‘Vector(0, 3)’The code given under main tests for each of the program requirements and subsequently uses the turtle module to plot randomly generated points rotated. A screenshot for a sample run of the program is attached. Template.py: from math import hypot, pi from random import uniform import turtle as t class Vector2D: ... if __name__ == '__main__': # Test Vector class a, b = Vector2D(0, 3), Vector2D(0, -3) tests =…
can you do it in python, thank you.
Please fix the code and explain the steps (specially the recursive part). Also please test it and screenshot the code as well as the output. (using python)
(€) 10:08 ••. 4. Random walkers. Write a program RandomWalkers.java that takes two integer command-line arguments r and trials. In each of trials independent experiments, simulate a random walk until the random walker is at Manhattan distance r from the starting point. Print the average number of steps. -/Desktop/loops> java Randomwalkers 5 1000000 average number of steps = 14.98188 -/Desktop/loops> java Randomlalkers 5 1000000 average number of steps = 14.93918 -/Desktop/loops> java Randomlalkers 10 100000 average number of steps = 59.37386 -/Desktop/loops> java Randomlalkers 20 100000 average number of steps = 235.6288 -/Desktop/loops> java Randomwalkers 40 100000 average number of steps = 949.14712 -/Desktop/loops> java Randomwalkers 80 100000 average number of steps = 3775.7152 -/Desktop/loops> java Randomwalkers 160 100000 average number of steps = 15113.61108 As r increases, we expect the random walker to take more and more steps. But how many more steps? Use RandomWalkers.java…
Discussion: chapter 4 Pick a method of debugging/error catching and explain how it works and give a real world example of how it works.
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