Code RoomDictionary mutation unsynchronized
MediumPrep Room Coding #2346

Dictionary mutation unsynchronized

Code reviewConcurrencyMid–Senior~18 min

Review this in-memory counter shared across threads.

What a strong answer looks like

Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix, specific and kind.

0:00 of about 18 min
Mark a line and say what kind of problem it is.0 findings
1counts = {}
2def record(key):
3 counts[key] = counts.get(key, 0) + 1
Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.