20162314 2017-2018-1 <Program Design & Data Structures>Learning Summary Of The Eleventh Week Summary of Key Concepts In hashing, elements are stored in a hash table, with their location in thetable determined by a hashing function. The situation…
20162314 2017-2018-1 <Program Design & Data Structures>Learning Summary Of The Ninth Week Summary of Key Concepts A heap is a complete binary tree in which each element is greater than or equal to both of its children. Adding an element to a hea…
20162314 2017-2018-1 <Program Design & Data Structures>Learning Summary Of The Seventh Week Summary of Key Concepts A tree is a nonlinear structure whose elements are organized into a hierarchy. The order of a tree specifies the maximum number o…
20162314 2017-2018-1 <Program Design & Data Structures>Learning Summary Of The Fifth Week Summary of Key Concepts A collection is an object that gathers and organizes other objects. Elements in a collection are typically organized by the order o…
20162314 2017-2018-1 <Program Design & Data Structures>Learning Summary Of The Second Week Summary of teaching materials Searching is the process of finding a designated target within a group of items or determining that it doesn't exist. An eff…
20162314 2017-2018-1 <Program Design & Data Structures>Learning Summary Of The First Week Summary of teaching materials Algorithm analysis is the basic project of the computer science. Increasing function prove that the utilization of the time a…
20162314 2017-2018-1 <Program Design & Data Structures>Learning Summary Of The Tenth Week Summary of Key Concepts An undirected graph is a graph where the pairings representing the edges are unordered. Two vertices in a graph are adjacent if the…
20162314 2017-2018-1 <Program Design & Data Structures>Learning Summary Of The Eighth Week Summary of Key Concepts A binary search tree is a binary tree in which, for each node, the elements in the left subtree are less than the parent, and the…
20182320<Program Design and Data Structures>Learning Summary Week9 1.Summary of Textbook's Content 1.1 Chapter 15:Tree 1.1.1 Concept of Tree: 'Tree' is a data sturcture,which is non-linear. It consists of nodes and edges. 1.1.2 Some important concep…
Coursera课程<Python Data Structures> 密歇根大学 Charles Severance Week6 Tuple 10 Tuples 10.1 Tuples Are Like Lists 元组是另外一种序列,它的方法和list挺像的.它的元素也是从0开始计数. >>> x = ('Glenn', 'Sally', 'Joseph') >>> print(x[2]) Joseph >>> y = (1, 9, 2)…
Coursera课程<Python Data Structures> 密歇根大学 Charles Severance Week4 List 8.2 Manipulating Lists 8.2.1 Concatenating Lists Using + 使用"+"可以把存在的两个list加在一起.如: >>> a = [1, 2, 3] >>> b = [4, 5, 6] >>> c = a + b >>&g…
<Python for Data Analysis>一书由Wes Mckinney所著,中文译名是<利用Python进行数据分析>.这里记录一下学习过程,其中有些方法和书中不同,是按自己比较熟悉的方式实现的. 第二个实例:MovieLens 1M Data Set 简介: GroupLens Research提供了从MovieLens用户那里收集来的一系列对90年代电影评分的数据 数据地址:http://files.grouplens.org/datasets/movielens/…
<Python for Data Analysis>一书由Wes Mckinney所著,中文译名是<利用Python进行数据分析>.这里记录一下学习过程,其中有些方法和书中不同,是按自己比较熟悉的方式实现的. 第一个实例:1.usa.gov data from bit.ly 简介:2011年,URL缩短服务bit.ly和美国政府网站usa.gov合作,提供了一份从生成.gov或.mil短链接用户那里收集来的匿名数据 数据下载地址:https://github.com/wesm/py…
<利用python进行数据分析>一书的第五章源码与读书笔记 直接上代码 # -*- coding:utf-8 -*-# <python for data analysis>第五章, pandas基础# 高级数据结构与操作工具 import pandas as pdimport numpy as npimport time start = time.time()# pandas的数据结构, series and dataframe# 1.series,类似一维数据, 一个字典,建立了…
<利用python进行数据分析>第二章的姓名例子,代码.整个例子的所有代码集成到了一个文件中,导致有些对象名如year同时作为了列名与行名,会打印warning,可分不同的part依次运行.所有的作图代码均已注释,按需取消注释即可.用的工具.函数比较多,但是解释不多,后面各章再深入介绍.代码中仅保留了98年-08年的数据,更多数据-https://github.com/wesm/pydata-book # -*- coding:utf-8 -*-# names data set import…
<Data Structures and Algorithm Analysis in C>学习与刷题笔记 为什么要学习DSAAC? 某个月黑风高的夜晚,下班的我走在黯淡无光.冷清无人的冲之大道上,同时心里冒出一个强烈的想法:我不要再过这种无休止地加班.整天干着繁重琐碎的事情的生活了!我要回去读书!我要考研!在接下来的一个多月中,我不断在考研和换工作之间徘徊,最后我得出一个结论:我不知道读研好还是换工作好,但我知道把自己感兴趣的知识学好总不会错.数据结构是我们专业大二下学期的一门选修课,但当时正…
<驾驭Core Data>系列教程综合了<Core Data for iOS>,<Learning Core Data for iOS>,<Core Data Programming Guide>,以及相关的博客资料.共包含14章内容.希望本系列教程能对学习Core Data的iOS开发者有所帮助. 本文由海水的味道编译整理,请勿转载,请勿用于商业用途. 当前版本号:0.0.5 第一章 Core Data概述 Mac OS X 10.4 Tig…