Katfly-优快云博客

原创 [解决方法]回收站东西删不掉

问题：今天回收站里面有个东西删不掉。解决方法：1. 打开终端，输入：sudo rm -rf ~/.local/share/Trash/*2. 之后回收站里面的东西就能删掉了。参考了：http://forum.ubuntu.org.cn/viewtopic.php?p=803225

2015-01-22 13:58:51 1263

原创第一周：最大子列和问题-算法4：在线处理（作业）

中国大学MOOC。数据结构。作业。这门课作业不算成绩。老师说可以随便交流。小白写个作业也不容易，就存一份。比较好的算法如下图。01-1. 最大子列和问题(20)给定K个整数组成的序列{ N1, N2, ..., NK }，“连续子列”被定义为{ Ni, Ni+1, ..., Nj }，其中 1 输入格式：输入第1行给出正整数

2014-12-21 16:15:24 740

原创第一周：用程序来做计算（笔记）

云课堂。程序设计入门—Java语言。课程笔记。import java.util.Scanner;public class Hello { public static void main(String[] args) { // 加上或删除注释：Ctrl + /；补全：alt + / // 1.2.1// System.out.println("你好");// Sc

2014-12-01 21:49:51 647

原创 openSUSE 13.1 → 13.2 升级记录及部分问题解决

系统是win8.1+openSUSE13.1，目前主要用13.1，看到有了13.2准备升级一下。最近才用Linux的，YAST玩坏了打不开也不会修，还好看到有敲命令升级的。1. 升级（参考http://en.opensuse.org/Upgrade）第一步：看一看有的源，然后调整一下zypper lr #看zypper addrepo -f 网址自己给取个名字

2014-11-23 15:53:01 1565

原创 WEEK3-Lists and pattern matching

1. Lists informally

2014-10-08 23:17:04 819

原创 WEEK2-Recursion and invariant programming

In the previous lesson we saw a simple example of a recursive function, namely SumDigitsR. This function is able to calculate the sum of all digits of any integer, no matter how many digits it has (wi

2014-09-30 10:51:26 1431

原创 WEEK3-Quick guide to linear regression

Explore Statistics with R (EDX)WEEK3-Visualizing hypothesis tests in R 视频笔记

2014-09-29 19:16:52 854

原创 WEEK3-Visualizing hypothesis tests in R, t-tests in R

Explore Statistics with R (EDX)WEEK3-Visualizing hypothesis tests in R 视频笔记

2014-09-26 09:58:43 1246

原创 WEEK1-4: from L1(intro) to L7(debegging)

6.00.1x Introduction to Computer Science and Programming Using Python (EDX)WEEK1-4笔记: from L1(intro) to L7(debegging)

2014-09-25 14:24:14 1586

原创 WEEK3-Using the z distribution in R

Explore Statistics with R (EDX) WEEK3-Using the z distribution in R视频笔记一、一些概念和用法1. The Normal DistributionDensity, distribution function, quantile function and random generation for the

2014-09-25 13:44:38 1765

原创 [解决方法]错误于plot.new() : figure margins too large

之前遇到了像这样，横轴变量显示不全的问题，

2014-09-23 16:20:48 10935

原创 WEEK2-Descriptive statistics and data cleaning

KIx: KIexploRx Explore Statistics with R

2014-09-22 13:57:05 1171

Memory is a knife. It can hurt you.