大锅八十小锅四十

==不能当自己是妹纸==为了装Universal Feed Parser，先装了setuptools下载sudo wget https://pypi.python.org/packages/source/s/setuptools/setuptools-0.6c11.tar.gz#md5=7df2a529a074f613b509fb44feefe74e解压sudo

优化技术特别擅长用于处理：受多种变量的影响，存在许多可能解的问题，以及结果因这些变量的组合而产生很大变化的问题。 优化算法的典型应用场景，存在大量可能的题解以至于我们无法对它们进行一一尝试的情况。 既然无法一一尝试，怎么做？成本函数（The Cost Function） 量化解的优劣，要求是函数返回的值越大，表示该方案越差。随机搜索（Random Searching） 很简单（tubie

实在不能理解为啥搜狗输入法每次我打biji的时候总是给我跳出荸荠(qi) (づ￣ 3￣)づ，还有biaoshi，总是出标识(zhi)..╭(╯^╰)╮哼基于距离的相似度计算 prefs[person][item] 数据集格式如下： example: aaaa={‘WANG’:{‘Lady in the Water’:3,’HAHA story’:2},…} from math imp

The algorithms we mentioned can solve the more general problem of learning to recognize whether a document belongs in one category or another. Early attempts to filter spam were all rule-based classi

84. Largest Rectangle in Histogram height的内容是 [5,6,7,8,3]，特点是除了最后一个，前面全部保持递增，且最后一个立柱的高度小于前面所有立柱高度。对于这种特点的柱状图，如果使用上面所说的“挨个使用每一个柱状图的高度作为矩形的高度，求面积”的方法，还需要用嵌套循环吗？我们知道除了最后一个，从第一个到倒数第二个立柱的高度都在升高，那么如果挨个使用每一个

Given a string containing just the characters ‘(‘, ‘)’, ‘{‘, ‘}’, ‘[’ and ‘]’, determine if the input string is valid.The brackets must close in the correct order, “()” and “()[]{}” are all valid but “

Given a string containing just the characters ‘(’ and ‘)’, find the length of the longest valid (well-formed) parentheses substring.For “(()”, the longest valid parentheses substring is “()”, which has

Evaluate the value of an arithmetic expression in Reverse Polish Notation.Valid operators are +, -, *, /. Each operand may be an integer or another expression.Some examples: [“2”, “1”, “+”, “3”, ““]

You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a linke

Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lists.Subscribe to see which companies asked this question 思路： 因

懒虫锅～～～！！！！ 原始数据： 以及用户目前对doc的数据 #coding:utf-8import csvimport operatorimport mathcsvfile=file("data1.csv",'rU')reader=csv.reader(csvfile,dialect='excel')doc={}item=[]for line in reader:

Given an array of integers, find two numbers such that they add up to a specific target number.The function twoSum should return indices of the two numbers such that they add up to the target, where in

You are playing the following Bulls and Cows game with your friend: You write down a number and ask your friend to guess what the number is. Each time your friend makes a guess, you provide a hint that

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 integer, replace the number by the sum of the squares of i

Given an array of integers and an integer k, find out whether there are two distinct indices i and j in the array such that nums[i] = nums[j] and the difference between i and j is at most k. 思路 一开

Description:Count the number of prime numbers less than a non-negative number, n. javapublic class Solution { public int countPrimes(int n) { boolean[] a= new boolean[n]; for (in

Given a pattern and a string str, find if str follows the same pattern.Here follow means a full match, such that there is a bijection between a letter in pattern and a non-empty word in str.Examples:

Given an array of citations (each citation is a non-negative integer) of a researcher, write a function to compute the researcher’s h-index.According to the definition of h-index on Wikipedia: “A scien

Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target? Find all unique quadruplets in the array which gives the sum of target.Note: Elements in a quad

Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters for “abcabcbb” is “abc”, which the length is 3. For “

Given an array of strings, group anagrams together.For example, given: [“eat”, “tea”, “tan”, “ate”, “nat”, “bat”], Return:[ [“ate”, “eat”,”tea”], [“nat”,”tan”], [“bat”] ] Note: For the re

前言：家里发生了一些事情，所以又耽搁了一段时间，这周交的report都有点潦草，好在ucb1本身就不是一个很复杂的算法。 This week, I have studied one of the algorithms in the UCB falmily, which is called the UCB1 algorithm.The UCB1 algorithm pays attention to

Given an array of integers, every element appears twice except for one. Find that single one.Note: Your algorithm should have a linear runtime complexity. Could you implement it without using extra me

All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: “ACGAATTCCG”. When studying DNA, it is sometimes useful to identify repeated sequences within the DNA.Write a

Given two integers representing the numerator and denominator of a fraction, return the fraction in string format.If the fractional part is repeating, enclose the repeating part in parentheses.For exam

圣诞节快乐(づ￣ 3￣)づ～～～在这个半放假的日子里，人也变得慵懒起来，在MOOC下学习了静态页面的简单爬虫（传送门：http://www.imooc.com/learn/563），干货满满啊～～所以爬了一个芈月传么么哒～～～# coding=utf-8import urllib2class UrlManager(object): def __init__(self): s

写这么丑的代码我也是醉了，继续学习。 第二周的assignment： Mean Rating: Calculate the mean rating for each movie, order with the highest rating listed first, and submit the top 5. % of ratings 4+: Calculate the percen

Given a 2D binary matrix filled with 0’s and 1’s, find the largest rectangle containing all ones and return its area. 思路： 借鉴了leetcode84 的算法，首先对输入的矩阵进行预处理 一开始没有考虑到输入数据的形式是[‘00’,’00’] 以为是[[0,0

The Sudoku board could be partially filled, where empty cells are filled with the character ‘.’. 思路 本题是判断目前九宫给填上的数字是否有效 即：行无重复，列无重复，所在的小九宫格中无重复 所在第几个九宫格：i/3∗3+j/3i/3*3+j/3class Solution(obj

python 练习代码 练习1: 输入：年、月（1-12）、日（1-31） 打印出相应的月份、名称months=['Janary','February','March','April','May','June','July','August','September','October','November','December']endings=['st','nd','rd']+7*['th

本练习根据《python基础教程》课后练习一——《即时标记》改编 分为四个模块（不包括输出部分）：文本解析、规则制定、过滤、处理程序，顺序如下： 规则制定 Rule模块由action和condition两部分实现，就是在遍历规则的时候通过调用condition这个东西来判断是否符合当前规则。我们考虑了标题(H1Rule)、引用(GuideRule)、无序列表(ListItemRule&Li

questionValidate if a given string is numeric.Some examples: “0” => true ” 0.1 ” => true “abc” => false “1 a” => false “2e10” => true Note: It is intended for the problem statement to be ambiguou

Total Accepted: 117053 Total Submissions: 354699 Difficulty: Easy Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length.Do not allocate

Given an array and a value, remove all instances of that value in place and return the new length.The order of elements can be changed. It doesn’t matter what you leave beyond the new length.Subscribe

Given a non-negative number represented as an array of digits, plus one to the number.The digits are stored such that the most significant digit is at the head of the list.class Solution(object): d

Total Accepted: 61817 Total Submissions: 141889 Difficulty: Easy Given an array nums, write a function to move all 0’s to the end of it while maintaining the relative order of the non-zero elements.Fo

You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 stones. The one who removes the last stone will be the

Related to question Excel Sheet Column TitleGiven a column title as appear in an Excel sheet, return its corresponding column number.For example:A -> 1B -> 2C -> 3...Z -> 26AA -> 27AB -> 28 clas

问题描述 Write a program to find the n-th ugly number.Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. For example, 1, 2, 3, 4, 5, 6, 8, 9, 10, 12 is the sequence of the first 1

Write a program to check whether a given number is an ugly number.Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. For example, 6, 8 are ugly while 14 is not ugly since it in