Leetcode 401. Binary Watch
Return all valid times (H:MM) where the 4-bit hour (0–11) and 6-bit minute (0–59) representations have exactly turnedOn ones in total. This is a combinatorics/bit-counting task: enumerate hour/minute pairs whose combined popcount equals turnedOn.
Question Timeline
See when this question was last asked and where, including any notes left by other candidates.
All Regions
Hello Interview Premium
Your account is free and you can post anonymously if you choose.