kolosovpetro / rpncalculator

Reverse Polish Notation Calculator. Evaluates infix expressions.

RPN Calculator

Reverse Polish Notation Calculator. Evaluates infix expressions.

• Supported operators: +, -, *, /, ^, sin, cos, tan, ln, log, sqrt, ctan, exp
• Supported constants: e, pi

Separate each token with whitespace.

Code snippet

var infixString = "3 + 4 * 2 / ( 1 - 5 ) ^ 2 ^ 3";
Console.WriteLine(ShuntingYard.InfixToPostfixString(infixString));    // 3 4 2 * 1 5 - 2 3 ^ ^ / +
Console.WriteLine(InfixEvaluator.EvaluateInfix(infixString));    // 3,0001220703125
            
infixString = "3 + 4 ^ ( 1 / 2 )";
Console.WriteLine(ShuntingYard.InfixToPostfixString(infixString));    // 3 4 1 2 / ^ +
Console.WriteLine(InfixEvaluator.EvaluateInfix(infixString));    // 5

infixString = "10 * ( 10 + 1 ) ^ 2";
Console.WriteLine(ShuntingYard.InfixToPostfixString(infixString));    // 10 10 1 + 2 ^ *
Console.WriteLine(InfixEvaluator.EvaluateInfix(infixString));    // 1210

infixString = "1 + cos ( 1 / 2 ) + sin ( 1 / 2 )";
Console.WriteLine(ShuntingYard.InfixToPostfixString(infixString));    // 1 1 2 / cos + 1 2 / sin +
Console.WriteLine(InfixEvaluator.EvaluateInfix(infixString));    // 2,3570081004945758

infixString = "2 + ( tan ( 1 / 2 ) ) ^ 2 + cos ( 0 )";
Console.WriteLine(ShuntingYard.InfixToPostfixString(infixString));    // 2 1 2 / tan 2 ^ + 0 cos +
Console.WriteLine(InfixEvaluator.EvaluateInfix(infixString));    // 3,298446410409525
            
infixString = "2 + ln ( tan ( 1 / 2 ) ) + cos ( 0 )";
Console.WriteLine(ShuntingYard.InfixToPostfixString(infixString));    // 2 1 2 / tan ln + 0 cos +
Console.WriteLine(InfixEvaluator.EvaluateInfix(infixString));    // 2,395417554058408
            
infixString = "ln ( exp ( 2 ) )";
Console.WriteLine(ShuntingYard.InfixToPostfixString(infixString));    // 2 exp ln
Console.WriteLine(InfixEvaluator.EvaluateInfix(infixString));    // 2
            
infixString = "sqrt ( e ^ pi )";
Console.WriteLine(ShuntingYard.InfixToPostfixString(infixString));    // 2,718281828459045 3,141592653589793 ^ sqrt
Console.WriteLine(InfixEvaluator.EvaluateInfix(infixString));    // 4,810477380965351
            
infixString = "sin ( pi / 4 )";
Console.WriteLine(ShuntingYard.InfixToPostfixString(infixString));    // 3,141592653589793 4 / sin
Console.WriteLine(InfixEvaluator.EvaluateInfix(infixString));    // 0,7071067811865476