Solution: Parsing a Boolean Expression
Explore how to parse and evaluate boolean expressions using a stack-based approach. Learn to handle nested NOT, AND, and OR operations efficiently by processing expressions from the inside out. This lesson helps you implement and understand the algorithm with linear time and space complexity, a crucial skill for coding interviews involving expression parsing.
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Statement
You are given a string, expression, that represents a boolean expression. The expression can take one of the following forms:
't': Represents the boolean value TRUE.'f': Represents the boolean value FALSE.'!(expr)': Represents a NOT operation applied to a subexpressionexpr. It returns the logical negation ofexpr.'&(expr1, expr2, ..., exprN)': Represents an AND operation over one or more subexpressions. It returns TRUE only if all subexpressions evaluate to TRUE. ...