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Solution: Parsing a Boolean Expression

Explore how to parse and evaluate complex boolean expressions using a stack-based method in Go. This lesson guides you through handling nested operations with NOT, AND, and OR logic, teaching you to process expressions efficiently by mimicking human evaluation from innermost subexpressions outward. You'll understand the use of stacks to manage operators and operands, and how to apply logical evaluations step-by-step to return the final boolean result. This approach helps build strong problem-solving skills for coding interviews involving logical expression parsing.

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 subexpression expr. It returns the logical negation of expr.

  • '&(expr1, expr2, ..., exprN)': Represents an AND operation over one or more subexpressions. It returns TRUE only if all subexpressions evaluate to TRUE. ...