Solution: Basic Calculator
Explore how to solve arithmetic expression evaluations by applying the stack pattern in C#. This lesson guides you through handling digits, operators, and nested parentheses step-by-step and building an efficient calculator algorithm with linear time complexity.
Statement
Given a string containing an arithmetic expression, implement a basic calculator that evaluates the expression string. The expression string can contain integer numeric values and should be able to handle the “+” and “-” operators, as well as “()” parentheses.
Constraints:
Let s be the expression string. We can assume the following constraints:
-
s.length