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11. Container With Most Water (medium) 描述 Given n non negative integers a1, a2, ..., an , where each represents a point at coordinate (i, ai). n verti 阅读全文
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15. 3Sum (medium) 描述 Given an array of n integers, are there elements a, b, c in such that a + b + c = 0? Find all unique triplets in the array which 阅读全文
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描述 Given a m × n matrix, if an element is 0, set its entire row and column to 0. Do it in place. Follow up: Did you use extra space? A straight forwar 阅读全文