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取三个以上连续的连续的行使得他们的人数大于100 X city built a new stadium, each day many people visit it and the stats are saved as these columns: id, date, people Please w 阅读全文
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184. Department Highest Salary The Employee table holds all employees. Every employee has an Id, a salary, and there is also a column for the departme 阅读全文
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181. Employees Earning More Than Their Managers The Employee table holds all employees including their managers. Every employee has an Id, and there i 阅读全文
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Write a SQL query to rank scores. If there is a tie between two scores, both should have the same ranking. Note that after a tie, the next ranking num 阅读全文
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Write a SQL query to get the nth highest salary from the Employee table. For example, given the above Employee table, the nth highest salary where n = 阅读全文
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Write a SQL query to get the second highest salary from the Employee table. For example, given the above Employee table, the query should return 200 a 阅读全文
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118. Pascal's Triangle Given numRows, generate the first numRows of Pascal's triangle. For example, given numRows = 5,Return 阅读全文
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204. Count Primes Count the number of prime numbers less than a non-negative number, n. 题意：计算小于非负数的质数数。 阅读全文
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202. Happy Number Write an algorithm to determine if a number is "happy". A happy number is a number defined by the following process: Starting with a 阅读全文
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41. First Missing Positive Given an unsorted integer array, find the first missing positive integer. For example,Given [1,2,0] return 3,and [3,4,-1,1] 阅读全文