Question
A boolean expression is given as a string using the grammar: `t` (true), `f` (false), `!(expr)` (NOT), `&(e1,e2,...)` (AND of one or more sub-expressions), and `|(e1,e2,...)` (OR of one or more sub-expressions). Sub-expressions are comma-separated and may nest arbitrarily. Parse and evaluate the expression and return the resulting boolean. Assume the input is always well-formed.
parse_bool(expr: str) → bool["&(t,f)"]outfalseState your approach and its time/space complexity out loud before you optimize. Handle the edge cases (empty input, duplicates, overflow), and say why you chose this over the brute force. Green tests are the floor, not the grade.
Vibe coding: describe the solution in plain language (or narrate it) and the coach grades your approach. Generating runnable code from your description is coming next.