A week ago, I did an interview for an R&D position in a company. Apart from some other technical and logical tasks, I was asked to implement a simple rpn calculator, with the basic operators: sum, subtraction, product, division and square root. For those who don’t know what an rpn is follows a brief description from the beginning.
Infix notation Infix notation is the notation commonly used in arithmetical and logical formulae and statements.
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