Grouping

LeetCode 1282: Group the People, from Capacity Buckets to Emitting Full Groups

People who request the same group size belong in the same bucket, but one bucket may contain several groups. Build two connected solutions and learn to validate answers with no fixed order.

LeetCode 609: Find Duplicate File in System, from Parsing Records to Grouping by Content

Duplicate files share contents, but the answer contains full paths. Five connected checkpoints build parsing, correct grouping, hash-table optimization, and a submission-ready solution.