Solution: Parsing a Boolean Expression
Understand how to parse and evaluate complex boolean expressions by simulating human logic with stacks. Learn to handle AND, OR, and NOT operators inside nested subexpressions and apply a step-by-step approach to reduce the expression to a single boolean result while managing time and space complexity effectively.
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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.'|(expr1, expr2, ..., exprN)': Represents an OR operation over one or more subexpressions. It returns TRUE if at least one of the subexpressions evaluates to TRUE.
Your task is to parse this expression and return its boolean evaluation result.
Note: The input expression is guaranteed to always be valid and strictly adhere to the specified format and rules.
Constraints:
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