摘要:
Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpo... 阅读全文
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There are N children standing in a line. Each child is assigned a rating value.You are giving candies to these children subjected to the following req... 阅读全文
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Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST.这题和sort list等题都比较相似,需要先用快慢指针的方法找到链表的中点,然后... 阅读全文
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Say you have an array for which the ith element is the price of a given stock on day i.Design an algorithm to find the maximum profit. You may complet... 阅读全文
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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 the three integers.... 阅读全文
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Given n, generate all structurally unique BST's (binary search trees) that store values 1...n.For example,Given n = 3, your program should return all ... 阅读全文