Write a program in Java to take an infix mathematical expression. The expression will contain single- or double-digit numbers, ‘+’, ‘-‘, ‘*’, and ‘/’ operators, and parenthesis. First check the validity of the expression with respect to the position of opening and closing parenthesis. If the expression is not valid then display appropriate message, otherwise, convert that infix expression to corresponding postfix expression, evaluate that postfix expression and print the final result. You can use relevant Java built-in classes in your code. The sample inputs/ outputs are given below: Sample inputs and outputs: (User’s inputs are shown in bold) Sample 1 Enter the mathematical expression: 15*(8–3*2)+16/4) The expression is invalid Sample 2 Enter the mathematical expression: 15*(8–3*2)+16/4 The postfix expression: 15 8 3 2 * - * 16 4 / + The final result: 34
Write a program in Java to take an infix mathematical expression. The expression will contain single- or double-digit numbers, ‘+’, ‘-‘, ‘*’, and ‘/’ operators, and parenthesis. First check the validity of the expression with respect to the position of opening and closing parenthesis. If the expression is not valid then display appropriate message, otherwise, convert that infix expression to corresponding postfix expression, evaluate that postfix expression and print the final result. You can use relevant Java built-in classes in your code. The sample inputs/ outputs are given below: Sample inputs and outputs: (User’s inputs are shown in bold) Sample 1 Enter the mathematical expression: 15*(8–3*2)+16/4) The expression is invalid Sample 2 Enter the mathematical expression: 15*(8–3*2)+16/4 The postfix expression: 15 8 3 2 * - * 16 4 / + The final result: 34
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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Question
Write a program in Java to take an infix mathematical expression. The expression
will contain single- or double-digit numbers, ‘+’, ‘-‘, ‘*’, and ‘/’ operators, and
parenthesis. First check the validity of the expression with respect to the position of
opening and closing parenthesis. If the expression is not valid then display
appropriate message, otherwise, convert that infix expression to corresponding
postfix expression, evaluate that postfix expression and print the final result. You can
use relevant Java built-in classes in your code. The sample inputs/ outputs are given
below:
Sample inputs and outputs:
(User’s inputs are shown in bold)
Sample 1
Enter the mathematical expression: 15*(8–3*2)+16/4)
The expression is invalid
Sample 2
Enter the mathematical expression: 15*(8–3*2)+16/4
The postfix expression: 15 8 3 2 * - * 16 4 / +
The final result: 34
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