Question

1. As we already know converting infix expressions to prefix or postfix expressions is highly significant for computations. Now write a program in any language that will evaluate an postfix inputted expression. Show result along with Operand and Operator count. Your program should support all the different prefix expressions not limited to given samples. For example. Sample Input Sample Output Internal calculation tip 5 4 - 3 * 2 + Result: 5 Operand: 4 Operator: 3 (5-4) ((5-4)3) ((5-4)3)+2 4 5 3 * + 2 - 3 - Result: 14 (53) Operand: 5 Operator: 4 (4+(53)) ((4+(53))-2) ((4+(53))-2)-3

          1.
As we already know converting infix expressions to prefix or postfix expressions is highly
significant for computations. Now write a program in any language that will evaluate an
postfix inputted expression. Show result along with Operand and Operator count. Your
program should support all the different prefix expressions not limited to given samples.
For example.
Sample Input
Sample Output
Internal calculation tip
5 4 - 3 * 2 +
Result: 5
Operand: 4
Operator: 3
(5-4)
((5-4)*3)
((5-4)*3)+2
4 5 3 * + 2 - 3 -
Result: 14
(5*3)
Operand: 5
Operator: 4
(4+(5*3))
((4+(5*3))-2)
((4+(5*3))-2)-3

Show more…

1.
As we already know converting infix expressions to prefix or postfix expressions is highly
significant for computations. Now write a program in any language that will evaluate an
postfix inputted expression. Show result along with Operand and Operator count. Your
program should support all the different prefix expressions not limited to given samples.
For example.
Sample Input
Sample Output
Internal calculation tip
5 4 - 3 * 2 +
Result: 5
Operand: 4
Operator: 3
(5-4)
((5-4)*3)
((5-4)*3)+2
4 5 3 * + 2 - 3 -
Result: 14
(5*3)
Operand: 5
Operator: 4
(4+(5*3))
((4+(5*3))-2)
((4+(5*3))-2)-3

Added by Brian W.

Computer Science and Information Technology

Trishna Knowledge Systems 2018 Edition

Instant Answer

Solved by Expert Lien Le

Step 1

First, we need to read the postfix expression from the user. We can use the input() function to get the input from the user. Show more…

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Evaluate an inputted Postfix Expression. Please solve this code in Python language. Solve this in Python, please. As we already know, converting infix expressions to prefix or postfix expressions is highly significant for computations. Now write a program in any language that will evaluate a postfix inputted expression. Show the result along with Operand and Operator count: Your program should support all the different prefix expressions, not limited to the given samples. For example: Sample Input: Sample Output: Internal calculation tip: 5 4 -3 2+ Result: 5 (5-4) Operand: 4 ((5-4)*3) Operator: 3 ((5-4)*31+2 4 5 3 +2-3 - Result: 14 (5*3) Operand: 5 (4+(5*3)) Operator: 4 ((4+(5*3))-2) ((4+(5*3))-2)-3

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