540. Single Element in a Sorted Array

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349. Intersection of Two Arrays

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34. Find First and Last Position of Element in Sorted Array

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354. Russian Doll Envelopes

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35. Search Insert Position

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374. Guess Number Higher or Lower

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378. Kth Smallest Element in a Sorted Matrix

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392. Is Subsequence

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275. H-Index II

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278. First Bad Version

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