Merge Intervals
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What is Merge Intervals?
Given a list of intervals, merge all overlapping ones. You sort by start time and iterate, extending the current interval when the next one overlaps, or starting a new one when it does not. This is the foundational interval problem and teaches you that sorting by start time reduces the overlap check to a single comparison with the previous interval's end.
Free resources to learn Merge Intervals
More in stage 19: Intervals
Merge Intervals: common questions
Can I learn Merge Intervals in Hindi?
This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Merge Intervals in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.
Is this Merge Intervals tutorial for beginners?
It is lesson 118 of 137 in the free LeetCode roadmap, in stage 19, Intervals. If you are new to LeetCode, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.