秋天来了,感觉到了三十多岁的阶段,日子过得真快。上班的时候每天的工作内容都比较相似,盼到了周末,马上就到了周一,嗖一下一周就过去了。
我在这个站里写了不少日记,基本都是隐藏的状态。把心里的话记下来,絮絮叨叨一阵子,心里就会舒坦不少。 到了这个年龄不知为何,心里有好多好多话无处诉说。
平静也是幸福。一切不会重来。珍惜现在每一天的幸福。每一刻的小喜小悲。
秋天来了,感觉到了三十多岁的阶段,日子过得真快。上班的时候每天的工作内容都比较相似,盼到了周末,马上就到了周一,嗖一下一周就过去了。
我在这个站里写了不少日记,基本都是隐藏的状态。把心里的话记下来,絮絮叨叨一阵子,心里就会舒坦不少。 到了这个年龄不知为何,心里有好多好多话无处诉说。
平静也是幸福。一切不会重来。珍惜现在每一天的幸福。每一刻的小喜小悲。
Double check your operate system: ONLY Debian 8 (Jessie) works with this instruction
Apache version: 2.4 which is the default version comes with Debian 8 (Not working with Apache 2.2 or lower)
Update package list and upgrade outdated packages:
sudo apt-get update && sudo apt-get upgrade
Install Apache2:
sudo apt-get install apache2
Since PHP7 is not included in any Debian official source list, we gonna use the version compiled by Dotdeb.org, which is pretty widely used.
Add source:
sudo nano /etc/apt/sources.list
Add the following two lines to the end of the file:
deb http://packages.dotdeb.org jessie all deb-src http://packages.dotdeb.org jessie all
If you server is far from US, try find the nearest mirror: https://www.dotdeb.org/mirrors/
Get and Install GnuPG key:
wget https://www.dotdeb.org/dotdeb.gpg sudo apt-key add dotdeb.gpg
Update packages again
sudo apt-get update
Install PHP7:
here is a list of available packages currently: (By the way, Swoole also work with php7, use ‘pecl install swoole to install’)
php7.0-apcu php7.0-dbg php7.0-imagick php7.0-memcached php7.0-phpdbg php7.0-sybase php7.0-apcu-bc php7.0-dev php7.0-imap php7.0-mongodb php7.0-pspell php7.0-tidy php7.0-bz2 php7.0-enchant php7.0-interbase php7.0-msgpack php7.0-readline php7.0-xdebug php7.0-cgi php7.0-fpm php7.0-intl php7.0-mysql php7.0-recode php7.0-xmlrpc php7.0-cli php7.0-gd php7.0-json php7.0-odbc php7.0-redis php7.0-xsl php7.0-common php7.0-gmp php7.0-ldap php7.0-opcache php7.0-snmp php7.0-curl php7.0-igbinary php7.0-mcrypt php7.0-pgsql php7.0-sqlite3
Choose your list of mod, install with php
sudo apt-get install php7.0 php7.0-common php-pear #add your list of mods here
Install mod_php7 for Apache 2.4 and restart apache:
sudo apt-get install libapache2-mod-php7.0 sudo service apache2 restart
That’s it! Done!
Today, I just got my Banana Pi R1. Here is a simple guide to set it up as an OpenWRT router.
Step 1: Flash the TF(microSD) card.
diskutil list
Unmount it:
diskutil unmountDisk /dev/disk<strong>2</strong>
Write the image:
sudo dd bs=1m if=~/Downloads/BPI-R1_OpenWrt_V4.0.img of=/dev/rdisk<strong>2</strong>
Step 2: Power On your Banana Pi R1.
After that, I found only 80M(VFAT) + 150M(EXT4) was used on BPI-R1, which waste pretty much space on my 32GB TF card.
Extra Step: Expand the ext4 partition. (Inspired by SaruMaaz)
sudo dd bs=4m if=~/Downloads/gparted-live-0.24.0-2-i586.iso of=/dev/rdisk<strong>2</strong>;sync
今天偶然发现Netbeans不能显示中文,本来以为是charset的问题,然后意识到错误的charset会导致乱码,而不是小方块。
经过测试,使用最常用的英文字体,例如Arial, New Times Roman 都可以正常显示中文。其余字体,比如编程常用的MonoSpace,Consolas,Monaco什么的会无法显示中文。如图:
经过一番搜索,找到原因,简单地说,原因在于这些字体里面不包含中文,fallback font也没有中文.
又搜了一大圈,发现了一个很好的第三方字体,使用Consolas+微软雅黑中文,非常漂亮,成功解决,如图:(如果细心就会发现字数不一样,所以只是我的一个例子么~)
下载链接:
http://ishare.iask.sina.com.cn/f/8965397.html
备用链接:
Write a method named hasMidpoint that accepts three integers as parameters and returns true if one of the integers is the midpoint between the other two integers; that is, if one integer is exactly halfway between them. Your method should return false if no such midpoint relationship exists.
The integers could be passed in any order; the midpoint could be the 1st, 2nd, or 3rd. You must check all cases.
Calls such as the following should return true:
hasMidpoint(4, 6, 8)
hasMidpoint(2, 10, 6)
hasMidpoint(8, 8, 8)
hasMidpoint(25, 10, -5)
Calls such as the following should return false:
hasMidpoint(3, 1, 3)
hasMidpoint(1, 3, 1)
hasMidpoint(21, 9, 58)
hasMidpoint(2, 8, 16)
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以下是我和晓天想出来的答案。我们最开始打算先进行排序,再求差,来判断,很是程序写起来会很长,而且我们现在没有讲各种排序法。
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public static boolean hasMidpoint(int a,int b,int c){ int e=a+b+c; if (e/3==a||e/3==b||e/3==c) return true; return false; }
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# name expected return your return result
1 hasMidpoint(1, 2, 3) true true pass
2 hasMidpoint(2, 10, 6) true true pass
3 hasMidpoint(0, -50, -25) true true pass
4 hasMidpoint(21, 9, 58) false false pass
5 hasMidpoint(-2, 9, 27) false false pass
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提交答案之后,我突然觉得这个程序存在问题,虽然在系统给的数值里没有测出问题,但是由于int类数据的特点,10/3是等于3的。所以输入以下测试代码。
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public class test{ public static void main(String[] args){ System.out.println(hasMidpoint(0,-51,-25)); } public static boolean hasMidpoint(int a,int b,int c){ int e=a+b+c; if (e/3==a||e/3==b||e/3==c) return true; return false; } }
//由于是复制过来的,就不能保持很好的代码格式了。
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输出结果:true
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很显然,-25不是-51和0的中点,刚刚的源码是有问题的。
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把if的条件语句作了如下调整:
if ((e/3==a||e/3==b||e/3==c)&&e%3==0)
再次调用
System.out.println(hasMidpoint(0,-501,-250));
输出是false
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现在基本已经不会存在问题了,通过了我的所有测试。
如果有人认为我的代码还存在问题,欢迎回复。