基于Ubuntu 14.04 LTS编译Android4.4.2源代码
转载自:雨水:http://blog.csdn.net/gobitan/article/details/24367439
- $sudo apt-get install git gnupg flex bison gperf build-essential zip curl libc6-dev libncurses5-dev:i386 x11proto-core-dev libx11-dev:i386 libreadline6-dev:i386 libgl1-mesa-dri:i386 libgl1-mesa-dev g++-multilib mingw32 tofrodos python-markdown libxml2-utils xsltproc zlib1g-dev:i386 dpkg-dev
- $ sudo ln -s /usr/lib/i386-linux-gnu/mesa/libGL.so.1 /usr/lib/i386-linux-gnu/libGL.so
$sudo apt-get install git gnupg flex bison gperf build-essential zip curl libc6-dev libncurses5-dev:i386 x11proto-core-dev libx11-dev:i386 libreadline6-dev:i386 libgl1-mesa-dri:i386 libgl1-mesa-dev g++-multilib mingw32 tofrodos python-markdown libxml2-utils xsltproc zlib1g-dev:i386 dpkg-dev
$ sudo ln -s /usr/lib/i386-linux-gnu/mesa/libGL.so.1 /usr/lib/i386-linux-gnu/libGL.so
- # adb protocol on passion (Nexus One)
- SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4e12", MODE="0600", OWNER="<username>"
- # fastboot protocol on passion (Nexus One)
- SUBSYSTEM=="usb", ATTR{idVendor}=="0bb4", ATTR{idProduct}=="0fff", MODE="0600", OWNER="<username>"
- # adb protocol on crespo/crespo4g (Nexus S)
- SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4e22", MODE="0600", OWNER="<username>"
- # fastboot protocol on crespo/crespo4g (Nexus S)
- SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4e20", MODE="0600", OWNER="<username>"
- # adb protocol on stingray/wingray (Xoom)
- SUBSYSTEM=="usb", ATTR{idVendor}=="22b8", ATTR{idProduct}=="70a9", MODE="0600", OWNER="<username>"
- # fastboot protocol on stingray/wingray (Xoom)
- SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="708c", MODE="0600", OWNER="<username>"
- # adb protocol on maguro/toro (Galaxy Nexus)
- SUBSYSTEM=="usb", ATTR{idVendor}=="04e8", ATTR{idProduct}=="6860", MODE="0600", OWNER="<username>"
- # fastboot protocol on maguro/toro (Galaxy Nexus)
- SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4e30", MODE="0600", OWNER="<username>"
- # adb protocol on panda (PandaBoard)
- SUBSYSTEM=="usb", ATTR{idVendor}=="0451", ATTR{idProduct}=="d101", MODE="0600", OWNER="<username>"
- # adb protocol on panda (PandaBoard ES)
- SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="d002", MODE="0600", OWNER="<username>"
- # fastboot protocol on panda (PandaBoard)
- SUBSYSTEM=="usb", ATTR{idVendor}=="0451", ATTR{idProduct}=="d022", MODE="0600", OWNER="<username>"
- # usbboot protocol on panda (PandaBoard)
- SUBSYSTEM=="usb", ATTR{idVendor}=="0451", ATTR{idProduct}=="d00f", MODE="0600", OWNER="<username>"
- # usbboot protocol on panda (PandaBoard ES)
- SUBSYSTEM=="usb", ATTR{idVendor}=="0451", ATTR{idProduct}=="d010", MODE="0600", OWNER="<username>"
- # adb protocol on grouper/tilapia (Nexus 7)
- SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4e42", MODE="0600", OWNER="<username>"
- # fastboot protocol on grouper/tilapia (Nexus 7)
- SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4e40", MODE="0600", OWNER="<username>"
- # adb protocol on manta (Nexus 10)
- SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4ee2", MODE="0600", OWNER="<username>"
- # fastboot protocol on manta (Nexus 10)
- SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4ee0", MODE="0600", OWNER="<username>"
# adb protocol on passion (Nexus One)
SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4e12", MODE="0600", OWNER="<username>"
# fastboot protocol on passion (Nexus One)
SUBSYSTEM=="usb", ATTR{idVendor}=="0bb4", ATTR{idProduct}=="0fff", MODE="0600", OWNER="<username>"
# adb protocol on crespo/crespo4g (Nexus S)
SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4e22", MODE="0600", OWNER="<username>"
# fastboot protocol on crespo/crespo4g (Nexus S)
SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4e20", MODE="0600", OWNER="<username>"
# adb protocol on stingray/wingray (Xoom)
SUBSYSTEM=="usb", ATTR{idVendor}=="22b8", ATTR{idProduct}=="70a9", MODE="0600", OWNER="<username>"
# fastboot protocol on stingray/wingray (Xoom)
SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="708c", MODE="0600", OWNER="<username>"
# adb protocol on maguro/toro (Galaxy Nexus)
SUBSYSTEM=="usb", ATTR{idVendor}=="04e8", ATTR{idProduct}=="6860", MODE="0600", OWNER="<username>"
# fastboot protocol on maguro/toro (Galaxy Nexus)
SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4e30", MODE="0600", OWNER="<username>"
# adb protocol on panda (PandaBoard)
SUBSYSTEM=="usb", ATTR{idVendor}=="0451", ATTR{idProduct}=="d101", MODE="0600", OWNER="<username>"
# adb protocol on panda (PandaBoard ES)
SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="d002", MODE="0600", OWNER="<username>"
# fastboot protocol on panda (PandaBoard)
SUBSYSTEM=="usb", ATTR{idVendor}=="0451", ATTR{idProduct}=="d022", MODE="0600", OWNER="<username>"
# usbboot protocol on panda (PandaBoard)
SUBSYSTEM=="usb", ATTR{idVendor}=="0451", ATTR{idProduct}=="d00f", MODE="0600", OWNER="<username>"
# usbboot protocol on panda (PandaBoard ES)
SUBSYSTEM=="usb", ATTR{idVendor}=="0451", ATTR{idProduct}=="d010", MODE="0600", OWNER="<username>"
# adb protocol on grouper/tilapia (Nexus 7)
SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4e42", MODE="0600", OWNER="<username>"
# fastboot protocol on grouper/tilapia (Nexus 7)
SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4e40", MODE="0600", OWNER="<username>"
# adb protocol on manta (Nexus 10)
SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4ee2", MODE="0600", OWNER="<username>"
# fastboot protocol on manta (Nexus 10)
SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4ee0", MODE="0600", OWNER="<username>"
然后执行如下命令,将上述文件中的username替换为你的用户名。
- $sudo sed -i 's/username/dennis/g' /etc/udev/rules.d/51-android.rules
$sudo sed -i 's/username/dennis/g' /etc/udev/rules.d/51-android.rules
4. 配置ccache
- $sudo apt-get install ccache
- $source ~/.bashrc
$sudo apt-get install ccache
$source ~/.bashrc
==========================================
- $ mkdir ~/bin
- $ PATH=~/bin:$PATH
$ mkdir ~/bin
$ PATH=~/bin:$PATH
(2) 下载repo工具
- curl http://git-repo.googlecode.com/files/repo-1.12 > ~/bin/repo
curl http://git-repo.googlecode.com/files/repo-1.12 > ~/bin/repo
- $ chmod a+x ~/bin/repo
$ chmod a+x ~/bin/repo
- $mkdir aosp
- $cd aosp
$mkdir aosp
$cd aosp
(2) 初始化repo
- 74.125.71.82 www.googlesource.com
- 74.125.31.82 android.googlesource.com
- 203.208.46.172 cache.pack.google.com
- 59.24.3.173 cache.pack.google.com
74.125.71.82 www.googlesource.com
74.125.31.82 android.googlesource.com
203.208.46.172 cache.pack.google.com
59.24.3.173 cache.pack.google.com
至于为什么要出现网络错误,你懂的!
- $repo init -u https://android.googlesource.com/platform/manifest -b android-4.4.2_r2
$repo init -u https://android.googlesource.com/platform/manifest -b android-4.4.2_r2
- git config --global user.email "you@example.com"
- git config --global user.name "Your Name"
git config --global user.email "you@example.com"
git config --global user.name "Your Name"
- $repo sync
$repo sync
- $ cd aosp
- $ prebuilts/misc/linux-x86/ccache/ccache -M 50G
$ cd aosp
$ prebuilts/misc/linux-x86/ccache/ccache -M 50G
2. 设置输出目录
- dennis@dubuntu1404:~/devenv/aosp$ . build/envsetup.sh
- including device/samsung/manta/vendorsetup.sh
- including device/generic/mips/vendorsetup.sh
- including device/generic/armv7-a-neon/vendorsetup.sh
- including device/generic/x86/vendorsetup.sh
- including device/lge/mako/vendorsetup.sh
- including device/lge/hammerhead/vendorsetup.sh
- including device/asus/tilapia/vendorsetup.sh
- including device/asus/deb/vendorsetup.sh
- including device/asus/grouper/vendorsetup.sh
- including device/asus/flo/vendorsetup.sh
- including sdk/bash_completion/adb.bash
- dennis@dubuntu1404:~/devenv/aosp$
dennis@dubuntu1404:~/devenv/aosp$ . build/envsetup.sh
including device/samsung/manta/vendorsetup.sh
including device/generic/mips/vendorsetup.sh
including device/generic/armv7-a-neon/vendorsetup.sh
including device/generic/x86/vendorsetup.sh
including device/lge/mako/vendorsetup.sh
including device/lge/hammerhead/vendorsetup.sh
including device/asus/tilapia/vendorsetup.sh
including device/asus/deb/vendorsetup.sh
including device/asus/grouper/vendorsetup.sh
including device/asus/flo/vendorsetup.sh
including sdk/bash_completion/adb.bash
dennis@dubuntu1404:~/devenv/aosp$
- dennis@dubuntu1404:~/devenv/aosp$ lunch
- You're building on Linux
- Lunch menu... pick a combo:
- 1. aosp_arm-eng
- 2. aosp_x86-eng
- 3. aosp_mips-eng
- 4. vbox_x86-eng
- 5. aosp_manta-userdebug
- 6. mini_mips-userdebug
- 7. mini_armv7a_neon-userdebug
- 8. mini_x86-userdebug
- 9. aosp_mako-userdebug
- 10. aosp_hammerhead-userdebug
- 11. aosp_tilapia-userdebug
- 12. aosp_deb-userdebug
- 13. aosp_grouper-userdebug
- 14. aosp_flo-userdebug
- Which would you like? [aosp_arm-eng] 9
- ============================================
- PLATFORM_VERSION_CODENAME=REL
- PLATFORM_VERSION=4.4.2
- TARGET_PRODUCT=aosp_mako
- TARGET_BUILD_VARIANT=userdebug
- TARGET_BUILD_TYPE=release
- TARGET_BUILD_APPS=
- TARGET_ARCH=arm
- TARGET_ARCH_VARIANT=armv7-a-neon
- TARGET_CPU_VARIANT=krait
- HOST_ARCH=x86
- HOST_OS=linux
- HOST_OS_EXTRA=Linux-3.13.0-24-generic-x86_64-with-Ubuntu-14.04-trusty
- HOST_BUILD_TYPE=release
- BUILD_ID=KVT49L
- OUT_DIR=out
- ============================================
- dennis@dubuntu1404:~/devenv/aosp$ make -j4
dennis@dubuntu1404:~/devenv/aosp$ lunch
You're building on Linux
Lunch menu... pick a combo:
1. aosp_arm-eng
2. aosp_x86-eng
3. aosp_mips-eng
4. vbox_x86-eng
5. aosp_manta-userdebug
6. mini_mips-userdebug
7. mini_armv7a_neon-userdebug
8. mini_x86-userdebug
9. aosp_mako-userdebug
10. aosp_hammerhead-userdebug
11. aosp_tilapia-userdebug
12. aosp_deb-userdebug
13. aosp_grouper-userdebug
14. aosp_flo-userdebug
Which would you like? [aosp_arm-eng] 9
============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=4.4.2
TARGET_PRODUCT=aosp_mako
TARGET_BUILD_VARIANT=userdebug
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
TARGET_ARCH_VARIANT=armv7-a-neon
TARGET_CPU_VARIANT=krait
HOST_ARCH=x86
HOST_OS=linux
HOST_OS_EXTRA=Linux-3.13.0-24-generic-x86_64-with-Ubuntu-14.04-trusty
HOST_BUILD_TYPE=release
BUILD_ID=KVT49L
OUT_DIR=out
============================================
dennis@dubuntu1404:~/devenv/aosp$ make -j4
注:j4中的数字跟你的CPU个数和核数有关,详细参见参考资料[3].
- $ sudo apt-get install android-tools-fastboot
$ sudo apt-get install android-tools-fastboot
- export ANDROID_PRODUCT_OUT=/home/dennis/devenv/aosp/out/target/product/mako
export ANDROID_PRODUCT_OUT=/home/dennis/devenv/aosp/out/target/product/mako
- $ adb reboot bootloader
$ adb reboot bootloader
- dennis@dubuntu1404:~/devenv/aosp/out$ fastboot flashall -w
- --------------------------------------------
- Bootloader Version...: PRIMEMD04
- Baseband Version.....: I9250XXLJ1
- Serial Number........: 0146A0D00600900B
- --------------------------------------------
- checking product...
- FAILED
- Device product is 'tuna'.
- Update requires 'mako'.
- finished. total time: 0.035s
dennis@dubuntu1404:~/devenv/aosp/out$ fastboot flashall -w
--------------------------------------------
Bootloader Version...: PRIMEMD04
Baseband Version.....: I9250XXLJ1
Serial Number........: 0146A0D00600900B
--------------------------------------------
checking product...
FAILED
Device product is 'tuna'.
Update requires 'mako'.
finished. total time: 0.035s
- $ cd aosp
- dennis@dubuntu1404:~/devenv/aosp$ . build/envsetup.sh
- including device/samsung/manta/vendorsetup.sh
- including device/generic/mips/vendorsetup.sh
- including device/generic/armv7-a-neon/vendorsetup.sh
- including device/generic/x86/vendorsetup.sh
- including device/lge/mako/vendorsetup.sh
- including device/lge/hammerhead/vendorsetup.sh
- including device/asus/tilapia/vendorsetup.sh
- including device/asus/deb/vendorsetup.sh
- including device/asus/grouper/vendorsetup.sh
- including device/asus/flo/vendorsetup.sh
- including sdk/bash_completion/adb.bash
- dennis@dubuntu1404:~/devenv/aosp$ lunch aosp_arm-eng
- ============================================
- PLATFORM_VERSION_CODENAME=REL
- PLATFORM_VERSION=4.4.2
- TARGET_PRODUCT=aosp_arm
- TARGET_BUILD_VARIANT=eng
- TARGET_BUILD_TYPE=release
- TARGET_BUILD_APPS=
- TARGET_ARCH=arm
- TARGET_ARCH_VARIANT=armv7-a
- TARGET_CPU_VARIANT=generic
- HOST_ARCH=x86
- HOST_OS=linux
- HOST_OS_EXTRA=Linux-3.13.0-24-generic-x86_64-with-Ubuntu-14.04-trusty
- HOST_BUILD_TYPE=release
- BUILD_ID=KVT49L
- OUT_DIR=out
- ============================================
- dennis@dubuntu1404:~/devenv/aosp$ make -j4
- ============================================
- PLATFORM_VERSION_CODENAME=REL
- PLATFORM_VERSION=4.4.2
- TARGET_PRODUCT=aosp_arm
- TARGET_BUILD_VARIANT=eng
- TARGET_BUILD_TYPE=release
- TARGET_BUILD_APPS=
- TARGET_ARCH=arm
- TARGET_ARCH_VARIANT=armv7-a
- TARGET_CPU_VARIANT=generic
- HOST_ARCH=x86
- HOST_OS=linux
- HOST_OS_EXTRA=Linux-3.13.0-24-generic-x86_64-with-Ubuntu-14.04-trusty
- HOST_BUILD_TYPE=release
- BUILD_ID=KVT49L
- OUT_DIR=out
- ============================================
- including ./abi/cpp/Android.mk ...
- including ./art/Android.mk ...
- ....中间过程省略
- Install system fs image: out/target/product/generic/system.img
- out/target/product/generic/system.img+ maxsize=588791808 blocksize=2112 total=576716800 reserve=5947392
$ cd aosp
dennis@dubuntu1404:~/devenv/aosp$ . build/envsetup.sh
including device/samsung/manta/vendorsetup.sh
including device/generic/mips/vendorsetup.sh
including device/generic/armv7-a-neon/vendorsetup.sh
including device/generic/x86/vendorsetup.sh
including device/lge/mako/vendorsetup.sh
including device/lge/hammerhead/vendorsetup.sh
including device/asus/tilapia/vendorsetup.sh
including device/asus/deb/vendorsetup.sh
including device/asus/grouper/vendorsetup.sh
including device/asus/flo/vendorsetup.sh
including sdk/bash_completion/adb.bash
dennis@dubuntu1404:~/devenv/aosp$ lunch aosp_arm-eng
============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=4.4.2
TARGET_PRODUCT=aosp_arm
TARGET_BUILD_VARIANT=eng
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
TARGET_ARCH_VARIANT=armv7-a
TARGET_CPU_VARIANT=generic
HOST_ARCH=x86
HOST_OS=linux
HOST_OS_EXTRA=Linux-3.13.0-24-generic-x86_64-with-Ubuntu-14.04-trusty
HOST_BUILD_TYPE=release
BUILD_ID=KVT49L
OUT_DIR=out
============================================
dennis@dubuntu1404:~/devenv/aosp$ make -j4
============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=4.4.2
TARGET_PRODUCT=aosp_arm
TARGET_BUILD_VARIANT=eng
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
TARGET_ARCH_VARIANT=armv7-a
TARGET_CPU_VARIANT=generic
HOST_ARCH=x86
HOST_OS=linux
HOST_OS_EXTRA=Linux-3.13.0-24-generic-x86_64-with-Ubuntu-14.04-trusty
HOST_BUILD_TYPE=release
BUILD_ID=KVT49L
OUT_DIR=out
============================================
including ./abi/cpp/Android.mk ...
including ./art/Android.mk ...
....中间过程省略
Install system fs image: out/target/product/generic/system.img
out/target/product/generic/system.img+ maxsize=588791808 blocksize=2112 total=576716800 reserve=5947392
- $. build/envsetup.sh
- $lunch aosp_arm-eng
基于Ubuntu 14.04 LTS编译Android4.4.2源代码的更多相关文章
- 【转】基于Ubuntu 14.04 LTS编译Android4.4.2源代码
原文网址:http://blog.csdn.net/gobitan/article/details/24367439 基于Ubuntu 14.04 LTS编译Android4.4.2源代码 ...
- 基于Ubuntu 14.04 LTS编译Android4.4.2源码
版权声明:本文为博主原创文章,未经博主同意不得转载. https://blog.csdn.net/gobitan/article/details/24367439 基于Ubuntu 14.04 LTS ...
- 基于Ubuntu 15.04 LTS编译Android5.1.0源代码 (转)
原文链接:http://blog.csdn.net/yuxiangyunei/article/details/45365235 环境: ubuntu:ubuntu-15.04-desktop-am ...
- Ubuntu 14.04 LTS 下 android 2.3.5 源码编译过程
Ubuntu 14.04 LTS 下 android 2.3.5 源码编译过程 在新的Ubuntu 64位系统下去编译早期的安卓源码是会出现很多问题的,因为64位系统在安装完成后,很多32位的兼容 ...
- Ubuntu 14.04 LTS 64bit 编译SDL的问题
http://blog.csdn.net/jhting/article/details/38523945 Ubuntu 14.04 LTS 64bit 编译SDL的问题 分类: C/C++2014-0 ...
- 【Android 系统开发】CyanogenMod 13.0 源码下载 编译 ROM 制作 ( 手机平台 : 小米4 | 编译平台 : Ubuntu 14.04 LTS 虚拟机)
分类: Android 系统开发(5) 作者同类文章X 版权声明:本文为博主原创文章 ...
- ubuntu 14.04.5 编译Android 4.4.4 r1源码(最新)
本文博客链接:http://blog.csdn.net/qq1084283172/article/details/54426189 吐槽:ubuntu系统真是让人又爱又恨,也有可能是VMware Wo ...
- Ubuntu 14.04 LTS 安装 Juno 版 OpenStack Keystone
本文介绍如何在Ubuntu 14.04 LTS 上安装Juno版的Keystone, 我们采用的是手动安装的方式, 同时仅针对OpenStack的身份与访问管理系统Keystone. 事实上OpenS ...
- Ubuntu 14.04 LTS 安装和配置Bochs
Ubuntu 14.04 LTS 安装和配置Bochs 系统是:Ubuntu 14.04 LTS 64位 安装的是:bochs-2.6.8 Bochs 需要在 X11 环境下运行,因此你的 ...
随机推荐
- UI:多线程 、用GCD创建线程
什么是应用(程序):就是我们编写的代码编译后生成的app文件 进程:凡是一个运行的程序都可以看作为一个进程,如打开的多个 word,就可以认为是一个进程的多个线程. 线程:至少有一个线程就是主线程,网 ...
- SUI使用经验
基本布局结构: 本地js.css请使用正确的路径 <!DOCTYPE html> <html> <head> <meta charset="utf- ...
- ASP.NET Core MVC 2.x 全面教程__ASP.NET Core MVC 19. XSS & CSRF
存库之前先净化,净化之后再提交到数据库 刚才插入的那笔数据 把默认的Razor引擎默认的EnCode去掉.Razor默认会开启htmlEnCodding 数据恢复回来 插入数据库之前对插入的数据进行净 ...
- ASP.NET Core MVC 2.x 全面教程_ASP.NET Core MVC 24. Logging
常用的诊断中间件: UseDeveloperExceptionPage UseStatusCodePages:返回 400~600 的状态码 UseExceptionHandler 自定义异常的处理器 ...
- SimpleDateFormat并发隐患及其解决
此文已由作者姚太行授权网易云社区发布. 欢迎访问网易云社区,了解更多网易技术产品运营经验. SimpleDateFormat被大量使用于处理时间格式化过程,由于该类在创建时会指定一个pattern用于 ...
- CocoaPods(第三方类库管理工具)
iOS安装CocoaPods详细过程 一.简介 什么是CocoaPods CocoaPods是OS X和iOS下的一个第三类库管理工具,通过CocoaPods工具我们可以为项目添加被称为“Pods” ...
- CSA Round #50 (Div. 2 only) Min Swaps(模拟)
传送门 题意 给出一个排列,定义\(value为\sum_{i=1}^{n-1}abs(f[i+1]-f[i])\) \(swap(a[i],a[j])(i≠j)为一次交换\),询问最少的交换次数使得 ...
- UVALive 6833【模拟】
题意: 算从左往右的值,先乘后加的值,数的范围<=9= =,然后根据满足的条件输出字符. 思路: 从左往右就是直接来了,先做乘法就是乘法两边的数字靠向右边那个,且左边那个为0,然后所有值一加就好 ...
- Docker部署Tomcat,Nginx,Redis应用
一.tomcat部署 1.拉取tomcat镜像 docker pull tomcat:7-jre7 2创建tomcat容器 创建容器用于部署单点登录系统(CAS) -p表示地址映射 docker r ...
- PHP 遍历一个文件夹下所有文件和子文件夹的方法
话不多说,直接上代码 <?php function my_dir($dir) { $files = []; if(@$handle = opendir($dir)) { while(($file ...