摘要：
对象的种类 Beautiful Soup将复杂HTML文档转换成一个复杂的树形结构,每个节点都是Python对象,所有对象可以归纳为4种: Tag , NavigableString , BeautifulSoup , Comment 。 Tag Tag对象与XML或者HTML原生文档中的tag相同 阅读全文
摘要：
CREATE DATABASE <数据库名字>; 新建数据库 SHOW DATABASES; 查看所有数据库 USE <数据库名字> 连接数据库 SHOW TABLES; 查看当前数据库有多少表 CREATE TABLE 表的名字 新建表 ( 列名a 数据类型(数据长度), 列名b 数据类型(数据长 阅读全文
摘要：
Description There are another kind of Fibonacci numbers: F(0) = 7, F(1) = 11, F(n) = F(n-1) + F(n-2) (n>=2). Input Input consists of a sequence of lin 阅读全文
摘要：
Descripe Given a string containing only 'A' - 'Z', we could encode it using the following method: 1. Each sub-string containing k same characters shou 阅读全文
摘要：
Description The least common multiple (LCM) of a set of positive integers is the smallest positive integer which is divisible by all the numbers in th 阅读全文
摘要：
Description Given two integers n and m, count the number of pairs of integers (a,b) such that 0 < a < b < n and (a^2+b^2 +m)/(ab) is an integer.This p 阅读全文
摘要：
Description A ring is compose of n circles as shown in diagram. Put natural number 1, 2, ..., n into each circle separately, and the sum of numbers in 阅读全文
摘要：
Description In many applications very large integers numbers are required. Some of these applications are using keys for secure transmission of data, 阅读全文
摘要：
Description The digital root of a positive integer is found by summing the digits of the integer. If the resulting value is a single digit then that d 阅读全文
摘要：
Description The highest building in our city has only one elevator. A request list is made up with N positive numbers. The numbers denote at which flo 阅读全文