lilixu - 博客园

2015年7月

Leetcode 230 Kth Smallest Element in a BST

摘要： Given a binary search tree, write a functionkthSmallestto find thekth smallest element in it.Note:You may assume k is always valid, 1 ≤ k ≤ BST's tota... 阅读全文

posted @ 2015-07-02 08:42 lilixu 阅读(137) 评论(0) 推荐(0) 编辑

Leetcode 202 Happy Number

摘要： Write an algorithm to determine if a number is "happy". A happy number is a number defined by the following process: Starting with any positive intege 阅读全文

posted @ 2015-07-01 14:37 lilixu 阅读(171) 评论(0) 推荐(0) 编辑

Function Currying in JavaScript

摘要： Source:http://tech.pro/tutorial/2011/functional-javascript-part-4-function-curryingCurrying is the process of transforming a function that takes multi... 阅读全文

posted @ 2015-07-01 11:07 lilixu 阅读(990) 评论(0) 推荐(0) 编辑

Comparsion in JavaScript

摘要： Source: https://github.com/getify/You-Dont-Know-JS/blob/master/up%20&%20going/ch2.md#equalityFalse Values in JS""(empty string)0,-0,NaN(invalidnumber)... 阅读全文

posted @ 2015-07-01 09:06 lilixu 阅读(266) 评论(0) 推荐(0) 编辑

2015年6月

Leetcode 228 Summary Ranges

摘要： Given a sorted integer array without duplicates, return the summary of its ranges.For example, given[0,1,2,4,5,7], return["0->2","4->5","7"].类似于 Leetc... 阅读全文

posted @ 2015-06-30 21:01 lilixu 阅读(123) 评论(0) 推荐(0) 编辑

Leetcode 183 Customers Who Never Order

摘要： Suppose that a website contains two tables, theCustomerstable and theOrderstable. Write a SQL query to find all customers who never order anything.Tab... 阅读全文

posted @ 2015-06-30 15:12 lilixu 阅读(447) 评论(0) 推荐(0) 编辑

Leetcode 182 Duplicate Emails

摘要： +----+---------+| Id | Email |+----+---------+| 1 | a@b.com || 2 | c@d.com || 3 | a@b.com |+----+---------+For example, your query should return ... 阅读全文

posted @ 2015-06-30 14:33 lilixu 阅读(689) 评论(0) 推荐(0) 编辑

Leetcode 181 Employees Earning More Than Their Managers

摘要： TheEmployeetable holds all employees including their managers. Every employee has an Id, and there is also a column for the manager Id.+----+-------+-... 阅读全文

posted @ 2015-06-30 13:49 lilixu 阅读(325) 评论(0) 推荐(0) 编辑

Leetcode 175 Combine Two Tables

摘要： Table:Person+-------------+---------+| Column Name | Type |+-------------+---------+| PersonId | int || FirstName | varchar || LastName ... 阅读全文

posted @ 2015-06-30 13:29 lilixu 阅读(170) 评论(0) 推荐(0) 编辑

Leetcode 217 Contains Duplicate

摘要： Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the arr... 阅读全文

posted @ 2015-06-30 11:49 lilixu 阅读(135) 评论(0) 推荐(0) 编辑

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