calculator

mathematical expression evaluator with the Shunting Yard Algorithm.

This implementation of the Shunting Yard Algorithm has:

- no support for unary operations like '-1' or '1+(-2)'
- no support for functions like sqrt(64)

The calculator supports the following:

Operations:
- '-' (subtraction)
- '+' (addition)
- '*' (multiplication)
- '/' (division)
- '^' (exponent)

Supports Parenthesis

Number formats:
- integers
- floats

Use

go run main.go
> 5*2*(1*9)
90
> 5+2*(1*9)+5^2
48 

To run tests:

go test ./...

Flow

Input -> Lexical Analysis -> Parsing (Shunting Yard) --> Evaluate --> Output