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Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in their binary representation and r 阅读全文
posted @ 2019-11-21 14:09
Schwifty
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Write a SQL query to get the nth highest salary from the Employee table. + + + | Id | Salary | + + + | 1 | 100 | | 2 | 200 | | 3 | 300 | + + + For exa 阅读全文
posted @ 2019-11-21 13:52
Schwifty
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Write a SQL query to get the second highest salary from the Employee table. + + + | Id | Salary | + + + | 1 | 100 | | 2 | 200 | | 3 | 300 | + + + For 阅读全文
posted @ 2019-11-21 13:32
Schwifty
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The Employee table holds all employees. Every employee has an Id, a salary, and there is also a column for the department Id. + + + + + | Id | Name | 阅读全文
posted @ 2019-11-21 13:07
Schwifty
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Table: Person + + + | Column Name | Type | + + + | PersonId | int | | FirstName | varchar | | LastName | varchar | + + + PersonId is the primary key c 阅读全文
posted @ 2019-11-21 13:07
Schwifty
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Given a complete binary tree, count the number of nodes. Note: Definition of a complete binary tree from Wikipedia:In a complete binary tree every lev 阅读全文
posted @ 2019-11-21 11:44
Schwifty
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There are a total of n courses you have to take, labeled from 0 to n-1. Some courses may have prerequisites, for example to take course 0 you have to 阅读全文
posted @ 2019-11-21 11:26
Schwifty
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