mirror of
https://github.com/theoludwig/programming-challenges.git
synced 2024-12-08 00:45:29 +01:00
26 lines
940 B
Markdown
26 lines
940 B
Markdown
# reverse-polish-notation
|
|
|
|
Created by [@Divlo](https://github.com/Divlo) on 29 September 2020.
|
|
|
|
## Instructions
|
|
|
|
Your job is to create a calculator which evaluates expressions in Reverse Polish notation (a mathematical notation in which operators follow their operands. It does not need any parentheses as long as each operator has a fixed number of operands).
|
|
|
|
For example expression 5 1 2 + 4 / + 3 - (which is equivalent to 5 + ((1 + 2) / 4) - 3 in normal notation) should evaluate to 14.
|
|
|
|
For your convenience, the input is formatted such that a space is provided between every token.
|
|
|
|
Empty expression should evaluate to 0.
|
|
|
|
Valid operations are +, -, \*, /.
|
|
|
|
You may assume that there won't be exceptional situations (like stack underflow or division by zero).
|
|
|
|
## Source
|
|
|
|
- [Reverse polish notation - Codewars](https://www.codewars.com/kata/52f78966747862fc9a0009ae)
|
|
|
|
## Examples
|
|
|
|
See the `test` folder for examples of input/output.
|