Homework Help is Here – Start Your Trial Now!
Engineering
Computer Engineering
ava 3 5 + 1 - Please remember, there are space(s) between operands/operators in the ex[1]pression. So your solution needs to think of this aspect. You will solve the problem as stated below:- (1) [Design a simple calculator that helps you solve the expression given. Please be reminded that you need to design the calculator and not use in-built math methods from the programming language library to solve the expression. Also at the end of the program as a comment mention the time and space complexity of your solution. Time and space complexit

ava 3 5 + 1 - Please remember, there are space(s) between operands/operators in the ex[1]pression. So your solution needs to think of this aspect. You will solve the problem as stated below:- (1) [Design a simple calculator that helps you solve the expression given. Please be reminded that you need to design the calculator and not use in-built math methods from the programming language library to solve the expression. Also at the end of the program as a comment mention the time and space complexity of your solution. Time and space complexit

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
See similar textbooks
icon
Related questions
Question

java

3 5 + 1 -

Please remember, there are space(s) between operands/operators in the ex[1]pression. So your solution needs to think of this aspect.

You will solve the problem as stated below:-

(1) [Design a simple calculator that helps you solve the expression

given.

Please be reminded that you need to design the calculator and not use

in-built math methods from the programming language library to solve

the expression. Also at the end of the program as a comment mention the time and space complexity of your solution. Time and space complexity

 

Post-fix String Expression Create a stack to store operands (or values) Scan the given expression and do the following for every scanned element If the element is a number, push it into the stack If the element is an operator, pop operands for the operator from the stack. Evaluate the operator and push the result back to the stack When the expression is ended, the number in the stack is the final answer Post-fix String Expression (Example) Expression => “2 3 1 * + 9 -“ Scan '2', it's a number, so push it to stack. Stack contains '2' Scan 3', again a number, push it to stack, stack now contains '2 3’ (from bottom to top) Scan 1', again a number, push it to stack, stack now contains '2 3 1' , it's an operator, pop two operands from stack, apply the * operator on Scan operands, we get 3*1 which results in 3. We push the result '3' to stack. The stack now becomes '2 3'
Transcribed Image Text:Post-fix String Expression Create a stack to store operands (or values) Scan the given expression and do the following for every scanned element If the element is a number, push it into the stack If the element is an operator, pop operands for the operator from the stack. Evaluate the operator and push the result back to the stack When the expression is ended, the number in the stack is the final answer Post-fix String Expression (Example) Expression => “2 3 1 * + 9 -“ Scan '2', it's a number, so push it to stack. Stack contains '2' Scan 3', again a number, push it to stack, stack now contains '2 3’ (from bottom to top) Scan 1', again a number, push it to stack, stack now contains '2 3 1' , it's an operator, pop two operands from stack, apply the * operator on Scan operands, we get 3*1 which results in 3. We push the result '3' to stack. The stack now becomes '2 3'
Post-fix String Expression (Example) Scan +', it's an operator, pop two operands from stack, apply the + operator on operands, we get 3 + 2 which results in 5. We push the result '5' to stack. The stack now becomes '5'. Scan '9', it's a number, we push it to the stack. The stack now becomes '5 9'. Scan -', it's an operator, pop two operands from stack, apply the – operator on operands, we get 5 – 9 which results in -4. We push the result -4' to the stack. The stack now becomes '-4' There are no more elements to scan, we return the top element from the stack (which is the only element left in a stack) Test Cases Check for the following: o Valid Input (numbers) Valid Operators • Empty Input o No operator in input Difference between 1, 2, and/or 3 digit number (think of how to use space character)
Transcribed Image Text:Post-fix String Expression (Example) Scan +', it's an operator, pop two operands from stack, apply the + operator on operands, we get 3 + 2 which results in 5. We push the result '5' to stack. The stack now becomes '5'. Scan '9', it's a number, we push it to the stack. The stack now becomes '5 9'. Scan -', it's an operator, pop two operands from stack, apply the – operator on operands, we get 5 – 9 which results in -4. We push the result -4' to the stack. The stack now becomes '-4' There are no more elements to scan, we return the top element from the stack (which is the only element left in a stack) Test Cases Check for the following: o Valid Input (numbers) Valid Operators • Empty Input o No operator in input Difference between 1, 2, and/or 3 digit number (think of how to use space character)
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 4 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Computer Networking: A Top-Down Approach (7th Edi…
Computer Networking: A Top-Down Approach (7th Edi…
Computer Engineering
ISBN:
9780133594140
Author:
James Kurose, Keith Ross
Publisher:
PEARSON
Computer Organization and Design MIPS Edition, Fi…
Computer Organization and Design MIPS Edition, Fi…
Computer Engineering
ISBN:
9780124077263
Author:
David A. Patterson, John L. Hennessy
Publisher:
Elsevier Science
Network+ Guide to Networks (MindTap Course List)
Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:
9781337569330
Author:
Jill West, Tamara Dean, Jean Andrews
Publisher:
Cengage Learning
Concepts of Database Management
Concepts of Database Management
Computer Engineering
ISBN:
9781337093422
Author:
Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:
Cengage Learning
Prelude to Programming
Prelude to Programming
Computer Engineering
ISBN:
9780133750423
Author:
VENIT, Stewart
Publisher:
Pearson Education
Sc Business Data Communications and Networking, T…
Sc Business Data Communications and Networking, T…
Computer Engineering
ISBN:
9781119368830
Author:
FITZGERALD
Publisher:
WILEY
SEE MORE TEXTBOOKS