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【175】Combine Two Tables
【176】Second Highest Salary
【177】Nth Highest Salary
【178】Rank Scores
【180】Consecutive Numbers
【181】Employees Earning More Than Their Managers
【182】Duplicate Emails
【183】Customers Who Never Order
【184】Department Highest Salary
【185】Department Top Three Salaries
【196】Delete Duplicate Emails
【197】Rising Temperature
【262】Trips and Users
【569】Median Employee Salary
【570】Managers with at Least 5 Direct Reports
【571】Find Median Given Frequency of Numbers
【574】Winning Candidate
【577】Employee Bonus
【578】Get Highest Answer Rate Question
【579】Find Cumulative Salary of an Employee
【580】Count Student Number in Departments
【584】Find Customer Referee
【585】Investments in 2016
【586】Customer Placing the Largest Number of Orders
【595】Big Countries
【596】Classes More Than 5 Students
【597】Friend Requests I: Overall Acceptance Rate
【601】Human Traffic of Stadium
【602】Friend Requests II: Who Has the Most Friends
【603】Consecutive Available Seats
【607】Sales Person
【608】Tree Node
【610】Triangle Judgement
【612】Shortest Distance in a Plane
【613】Shortest Distance in a Line
【614】Second Degree Follower
【615】Average Salary: Departments VS Company
【618】Students Report By Geography
【619】Biggest Single Number
【620】Not Boring Movies
【626】Exchange Seats
原文地址：https://www.cnblogs.com/zhangwanying/p/9901918.html