u014779993的专栏

描述Given an unsorted array of integers, find the length of the longest consecutive elements sequence.For example, Given [100, 4, 200, 1, 3, 2], The longest consecutive elements sequence is [1,2,

/**     * Returns a hash code for this string. The hash code for a     * String object is computed as     *      * s[0]*31^(n-1) + s[1]*31^(n-2) + ... + s[n-1]     *      * usi

The following are top 10 algorithms related topics for coding interviews. As understanding those concepts requires much more effort, this list below only serves as an introduction. They are viewed fro

Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set.get(key) – Get the value (will always be positive) of the key if

描述Given a sorted array, remove the duplicates in place such that each element appear only onceand return the new length.Do not allocate extra space for another array, you must do this in place w

* Search in Rotated Sorted Array* * Suppose a sorted array is rotated at some pivot unknown to you beforehand.(i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 8 0 1 2 3. 6 7 8 0 1 2 3 4 5.You

Reverse Words in a StringGiven an input string, reverse the string word by word.

Write a function to find the longest common prefix string amongst an array of strings.模拟法，先选取第一个字符串，之后依次和后面的字符串得出LCP

Question : Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target? Find all unique quadruplets in the array which gives the sum of target.Note:Elem

Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring.思路用一个指针从0遍历到s.size()-1

横空出世，席卷互联网                                                                         ---评微软数据结构+算法面试100题作者：July。时间：2010年10月-11月。版权所有，侵权必究。出处：http://blog.youkuaiyun.com/v_JULY_v。说明：本文原题为：“横空出世，

描述Given an array of integers, find two numbers such that they add up to a specific target number.The function twoSum should return indices of the two numbers such that they add up to the target, w