Solution: Parsing a Boolean Expression
Explore how to parse and evaluate complex nested boolean expressions using stacks. Learn to apply logical operations like NOT, AND, and OR by processing subexpressions inside parentheses. This lesson equips you with a stack-based algorithm to handle boolean parsing efficiently, critical for coding interviews involving expression evaluation.
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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. ...