Questions related to the parsing (and possibly the evaluation) of free-form mathematical expressions in strings, lists, or streams
11
votes
3answers
677 views
CC C# calculator
This is my basic C# calculator; I'm sure there is much that can be improved. This design is based on Bjarne Stroustrup's C++ calculator, a purposely be-bugged version of which can be found at his ...
5
votes
2answers
401 views
Evaluating an expression with integers, +, and *, as well as -, /
There is a job interview question, and the source of the question is here.
The solution is pretty simple. We just need to split the input string by + and then by *. Then we compute products in a ...
4
votes
1answer
67 views
Evaluating an expression with integers, +, and *, as well as -, / - revision 3
The original question came from this web site.
Revision 1
Revision 2
And this is the third revision. I delete spaces and validate an equation before computing.
...
4
votes
2answers
2k views
Numeric expression parser - calculator
In particular, if someone could describe a better way to go from the tokenized list to the Expression tree, it would be super helpful. I would like to get rid of the casting in the parser but am not ...
10
votes
1answer
92 views
Mathematical expressions evaluator with callbacks, the logic
I hesitated quite a bit of time before posting this question since the code to review is more or less a monster (with regards to its size). It is a basic mathematical expressions evaluator, but with ...
10
votes
3answers
1k views
Basic C# calculator (+,-,*,/)
My 'teacher' requested this problem be solved by parsing the input into a tree based on the order of operations. The class Calc variables are specific to his ...
9
votes
1answer
65 views
Mathematical expressions evaluator with callbacks, the architecture
This question goes hand in hand with another question about a mathematical expressions evaluator in C++. The other question is meant to be read first, this one is but a complement to expose the ...
6
votes
2answers
1k views
Basic C# calculator (+,-,*,/) - V2
Original question:
Basic C# calculator (+,-,*,/)
My 'teacher' requested this problem be solved by parsing the input into a tree based on the order of operations. The class Calc variables are ...
4
votes
1answer
160 views
10
votes
2answers
280 views
+, -, *, /, () expression calculator
In an effort to understand how compilers work, I wrote a simple expression calculator in C#. A CalculatorExpression takes an infix string, converts the infix string ...
8
votes
4answers
2k views
Simple C++ calculator which follows BOMDAS rules
This was my first attempt at making a C++ calculator. The user basically inputs an expression (I'll use \$1+1*(9*(11-1))\$ as an example) and the program searches for and creates a vector for ...
6
votes
2answers
1k views
Cleaning up Reverse Polish Notation evaluator
I was wondering if anyone had some general clean up advice on my code. I believe that more helper functions would be my case but I could be wrong. 30 lines maximum per method is my rule. I can't seem ...
6
votes
4answers
6k views
Polish notation interpreter/calculator
Just for the heck of it, I wrote a simple little interpreter that takes in inputs in the form of Polish Notation.
The user will input something like
+ 5 6
...
5
votes
1answer
448 views
Reverse Polish Notation Calculator
Working through Learn You a Haskell, I made a Reverse Polish Notation calculator.
Please critique it.
...
