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16. 3Sum Closest Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of th 阅读全文
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15. 3Sum Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets in the array which gives th 阅读全文
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11. Container With Most Water Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are 阅读全文
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14. Longest Common Prefix Write a function to find the longest common prefix string amongst an array of strings. 阅读全文