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python实现简单爬虫功能
1 #首先我们可以先获取要下载图片的整个页面信息 2 #coding=utf-8 3 #Urllib 模块提供了读取web页面数据的接口,我们可以像读取本地文件一样读取www和ftp上的数据 4 import urllib 5 import re 6 #首先,我们定义了一个getHtml()函数:....
分类:编程语言   时间:2015-01-26 22:25:10    阅读次数:336
leetcode 【 Triangle 】python 实现
题目:Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below.For example, given the ...
分类:编程语言   时间:2015-01-26 20:42:03    阅读次数:180
leetcode 【 Unique Paths II 】 python 实现
题目:Follow up for "Unique Paths":Now consider if some obstacles are added to the grids. How many unique paths would there be?An obstacle and empty spac...
分类:编程语言   时间:2015-01-26 16:57:37    阅读次数:161
leetcode 【 Unique Paths 】python 实现
题目:A robot is located at the top-left corner of amxngrid (marked 'Start' in the diagram below).The robot can only move either down or right at any poi...
分类:编程语言   时间:2015-01-26 16:32:36    阅读次数:173
python实现算法题-汉诺塔
def hnoi(n,a,b,c):     if n == 1:         print a,c     else:         hnoi(n-1,a,c,b)         print a,c         hnoi(n-1,b,a,c) hnoi(3,'a','b','c')...
分类:编程语言   时间:2015-01-25 16:41:56    阅读次数:274
leetcode 【 Set Matrix Zeroes 】python 实现
题目:Given amxnmatrix, if an element is 0, set its entire row and column to 0. Do it in place.click to show follow up.Follow up:Did you use extra space?...
分类:编程语言   时间:2015-01-24 21:12:54    阅读次数:192
leetcode 【 Sort Colors 】python 实现
题目:Given an array withnobjects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red,...
分类:编程语言   时间:2015-01-24 19:58:37    阅读次数:213
leetcode 【 Search Insert Position 】python 实现
题目:Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in...
分类:编程语言   时间:2015-01-24 12:58:48    阅读次数:285
计算几何-凸包算法 Python实现与Matlab动画演示
凸包算法是计算几何中的最经典问题之一了。给定一个点集,计算其凸包。凸包是什么就不罗嗦了本文给出了《计算几何——算法与应用》中一书所列凸包算法的Python实现和Matlab实现,并给出了一个Matlab动画演示程序。啊,实现谁都会实现啦╮(╯▽╰)╭,但是演示就不一定那么好做了。算法CONVEXHU...
分类:编程语言   时间:2015-01-23 22:54:33    阅读次数:502
用python简单实现类似thinkphp的针对Mysql操作的数据模型
摘自以前CI实现的商城系统,做APP时需要实现数据接口,便用python实现了。 假设有表tp_article id title type 1 哈哈 1 2 图样涂森坡 1 使用thinphp实现取出type为1的数据如下 M()->from(''tp_article'')->where('type=1')->se...
分类:数据库   时间:2015-01-23 14:43:15    阅读次数:528
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