06 2015 档案
摘要：题目：TheEmployeetable holds all employees. Every employee has an Id, and there is also a column for the department Id.+----+-------+--------+-----------...
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摘要：题目：Given an integer array of sizen, find all elements that appear more than⌊ n/3 ⌋times. The algorithm should run in linear time and in O(1) space.题意：...
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摘要：题目：Implement a basic calculator to evaluate a simple expression string.The expression string contains onlynon-negativeintegers,+,-,*,/operators and em...
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摘要：题目：TheEmployeetable holds all employees. Every employee has an Id, a salary, and there is also a column for the department Id.+----+-------+--------+-...
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摘要：Write a SQL query to get the second highest salary from theEmployeetable.+----+--------+| Id | Salary |+----+--------+| 1 | 100 || 2 | 200 || ...
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摘要：题目：题目太长了，见链接-- >The Skyline ProblemNotes:The number of buildings in any input list is guaranteed to be in the range[0, 10000].The input list is alread...
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摘要：题目：Invert a binary tree. 4 / \ 2 7 / \ / \1 3 6 9to 4 / \ 7 2 / \ / \9 6 3 1Trivia:This problem was inspired byt...
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摘要：题目：Implement the following operations of a stack using queues.push(x) -- Push element x onto stack.pop() -- Removes the element on top of the stack.to...
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摘要：题目：Implement a basic calculator to evaluate a simple expression string.The expression string may contain open(and closing parentheses), the plus+or mi...
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摘要：题目：Given acompletebinary tree, count the number of nodes.Definition of a complete binary tree fromWikipedia:In a complete binary tree every level, exc...
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摘要：题目：Given a string S, you are allowed to convert it to a palindrome by adding characters in front of it. Find and return the shortest palindrome you ca...
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摘要：题目：Say you have an array for which theithelement is the price of a given stock on dayi.Design an algorithm to find the maximum profit. You may complet...
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摘要：题目：Given two words (startandend), and a dictionary, find all shortest transformation sequence(s) fromstarttoend, such that:Only one letter can be chan...
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摘要：题目：Given an array of non-negative integers, you are initially positioned at the first index of the array.Each element in the array represents your max...
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摘要：题目：You are given a string,s, and a list of words,words, that are all of the same length. Find all starting indices of substring(s) insthat is a concat...
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摘要：题目：Given a linked list, reverse the nodes of a linked listkat a time and return its modified list.If the number of nodes is not a multiple ofkthen lef...
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摘要：题目：There are two sorted arraysnums1andnums2of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity sho...
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摘要：题目：Given a 2D binary matrix filled with 0's and 1's, find the largest square containing all 1's and return its area.For example, given the following m...
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摘要：题目：Given an array of integers, find out whether there are two distinct indicesiandjin the array such that the difference betweennums[i]andnums[j]is at...
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摘要：题目：Design a data structure that supports the following two operations:void addWord(word)bool search(word)search(word) can search a literal word or a r...
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摘要：题目：There are a total ofncourses you have to take, labeled from0ton - 1.Some courses may have prerequisites, for example to take course 0 you have to f...
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摘要：题目：Given an array ofnpositive integers and a positive integers, find the minimal length of a subarray of which the sum ≥s. If there isn't one, return ...
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摘要：题目：Given two stringssandt, determine if they are isomorphic.Two strings are isomorphic if the characters inscan be replaced to gett.All occurrences of...
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摘要：题目：Implement a trie withinsert,search, andstartsWithmethods.// Your Trie object will be instantiated and called as such:// Trie trie = new Trie();// t...
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摘要：题目：There are a total ofncourses you have to take, labeled from0ton - 1.Some courses may have prerequisites, for example to take course 0 you have to f...
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摘要：题目：Remove all elements from a linked list of integers that have valueval.ExampleGiven:1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6,val= 6Return:1 --> 2 --> 3...
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摘要：题目：Given a range [m, n] where 0 >= 1; n >>= 1; offset++; } return m << offset; }}参考链接：http://blog.csdn....
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摘要：题目：Given a 2d grid map of'1's (land) and'0's (water), count the number of islands. An island is surrounded by water and is formed by connecting adjace...
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