lettuan

2017年1月16日

Leetcode 176. Second Highest Salary (Database)

摘要： Write a SQL query to get the second highest salary from the Employee table. For example, given the above Employee table, the second highest salary is 阅读全文

posted @ 2017-01-16 13:53 lettuan 阅读(435) 评论(0) 推荐(0) 编辑

Leetcode 197. Rising Temperature (Database)

摘要： Given a Weather table, write a SQL query to find all dates' Ids with higher temperature compared to its previous (yesterday's) dates. For example, ret 阅读全文

posted @ 2017-01-16 12:47 lettuan 阅读(167) 评论(0) 推荐(0) 编辑

Leetcode 181. Employees Earning More Than Their Managers (Database)

摘要： The Employee table holds all employees including their managers. Every employee has an Id, and there is also a column for the manager Id. Given the Em 阅读全文

posted @ 2017-01-16 12:28 lettuan 阅读(110) 评论(0) 推荐(0) 编辑

Leetcode 175. Combine Two Tables (Database)

摘要： Table: Person Table: Address Write a SQL query for a report that provides the following information for each person in the Person table, regardless if 阅读全文

posted @ 2017-01-16 11:45 lettuan 阅读(551) 评论(0) 推荐(0) 编辑

2017年1月9日

Leetcode 33. Search in Rotated Sorted Array

摘要： Suppose an array sorted in ascending order is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2). You a 阅读全文

posted @ 2017-01-09 13:10 lettuan 阅读(312) 评论(0) 推荐(0) 编辑

2017年1月8日

Leetcode 83. Remove Duplicates from Sorted List

摘要： Given a sorted linked list, delete all duplicates such that each element appears only once. For example,Given 1->1->2, return 1->2.Given 1->1->2->3->3 阅读全文

posted @ 2017-01-08 12:43 lettuan 阅读(127) 评论(0) 推荐(0) 编辑

Leetcode 26. Remove Duplicates from Sorted Array I and II

摘要： Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length. Do not allocate extra space fo 阅读全文

posted @ 2017-01-08 06:07 lettuan 阅读(191) 评论(0) 推荐(0) 编辑

Leetcode 78. Subsets I and II

摘要： Given a set of distinct integers, nums, return all possible subsets. Note: The solution set must not contain duplicate subsets. For example,If nums = 阅读全文

posted @ 2017-01-08 04:48 lettuan 阅读(126) 评论(0) 推荐(0) 编辑

2017年1月7日

Leetcode 60. Permutation Sequence

摘要： The set [1,2,3,…,n] contains a total of n! unique permutations. By listing and labeling all of the permutations in order,We get the following sequence 阅读全文

posted @ 2017-01-07 15:42 lettuan 阅读(108) 评论(0) 推荐(0) 编辑

Leetcode 69. Sqrt(x)

摘要： Implement int sqrt(int x). 思路： Binary Search 阅读全文

posted @ 2017-01-07 11:53 lettuan 阅读(97) 评论(0) 推荐(0) 编辑

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