Basic Calculator II
Explore how to evaluate strings representing mathematical expressions containing integers and operators like plus, minus, multiplication, and division. Understand how to implement a stack-based algorithm that handles operator precedence and integer division truncation, enabling you to solve this common coding interview problem effectively.
We'll cover the following...
Statement
Given a string s representing a mathematical expression containing non-negative integers and the operators +, -, *, and /, evaluate the expression and return its result.
Integer division must truncate toward zero. You may assume the expression is always valid, and all intermediate results fall within the
Note: Using any built-in function that directly evaluates strings as mathematical expressions (e.g.,
eval()) is not allowed.
Constraints: