Expression calculator
Implement a basic calculator that evaluates a string expression containing non-negative integers, '+', '-', '*', '/', spaces, and parentheses. Integer division truncates toward zero. The expression is always valid; assume the result and all intermediate values fit in a signed 64-bit integer. 1 <= len(s) <= 100000. Example: '2*(5+5*2)/3+(6/2+8)' -> 21.
Implement
calculate(s: str) → intExamples
in
["2*(5+5*2)/3+(6/2+8)"]out21What a strong answer looks like
State 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.
0:00 of about 35 min
solution.py
InputExpectedGot
["2*(5+5*2)/3+(6/2+8)"]21not run yetsample