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Intervals
Merge, insert, intersect, and schedule intervals. Sorting by start/end and sweep line techniques.
Start Practice
IntervalsBeginnerIntermediateAdvancedQuestions: 1–5
Choose mode, difficulty & questions on the next screen
What You'll Practice (4 techniques)
Sort by startMerge overlappingSweep lineMeeting rooms
Prerequisites
Sorting
Arrays
Difficulty Levels
Beginner
Core pattern recognition, fundamental approach.
Intermediate
Pattern variations, edge cases, optimization.
Advanced
Complex combinations, merge multiple patterns.