NeetCode #835LC-986MediumIntervals
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#835 · #986 · Interval List Intersections(区间列表的交集)

📌 Problem Statement & Constraints

You are given two lists of closed intervals firstList and secondList, each sorted and internally disjoint. Return the intersection of the two lists. Constraints: 0 <= firstList.length, secondList.length <= 1000, 0 <= start <= end <= 10^9.
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