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![Do [1,4] and [4,5] Overlap? Answer That First](/_next/image?url=%2Fblog%2Fcovers%2Fmerge-intervals-insert-interval.png&w=1200&q=75)
LeetCode 56 merges [1,4] and [4,5]; LeetCode 435 says they do not overlap at all. Closed versus half-open ends is the one real decision in interval problems, and most interval bugs come from never making it.
AdminAugust 11, 20268 min read