Mr.Z Zone

To Be the Ready Player One In the world

TOEFL Reading-Writing

TOEFL PRACTICE Reading 精读 TPO 04 P3 Ancient Athens One of the most important changes in Greece during the period from 800 B.C. to 500 B.C. was the rise of the polis, or city-state, and each pol...

Posted by Zreal on March 6, 2019

TOEFL Reading-Verbal-Writing

TOEFL PRACTICE Reading 精读 TPO 05 P1 Minerals and Plants Research has shown that certain minerals are required by plants for normal growth and development. The soil is the source of these minera...

Posted by Zreal on March 4, 2019

TOEFL Reading TPO 04 P1

Deer Populations of the Puget Sound

Deer Populations of the Puget Sound Two species of deer have been prevalent in the Puget Sound area of Washington State in the Pacific Northwest of the United States. The black-tailed deer, a lowl...

Posted by Zreal on February 27, 2019

TOEFL Reading TPO 19 P2

Succession, Climax, and Ecosystems

Succession, Climax, and Ecosystems ​ In the late nineteenth century, ecology began to grow into an independent science from its roots in natural history and plant geography. The emphasis of this n...

Posted by Zreal on February 25, 2019

TOEFL Reading TPO 02 P3

Early Cinema

Early Cinema The cinema did not emerge as a form of mass consumption until its technology evolved from the initial ‘peepshow’ format to the point where images were projected on a screen in a darke...

Posted by Zreal on February 23, 2019

TOEFL Reading TPO 01 P2

The Origins of Theater

The Origins of Theater ​ In seeking to describe the origins of theater, one must rely primarily on speculation, since there is little concrete evidence on which to draw.The most widely accepted th...

Posted by Zreal on February 21, 2019

可变分区储存管理

可变分区储存管理 要求 1.可以随机输入初始可用内存空间容量，以及进程对内存空间的请求序列，支持首次适应算法、最佳适应算法和最坏适应算法，能够在每次内存分配和回收操作后，显示内存空间的使用情况。具体信息见测试用例格式说明。 2.空闲分区通过空闲区链进行管理，在内存分配时，优先考虑低地址部分的空闲区。 3.当申请空间大于可用空闲内存空间时，不满足此次申请，仍显示此次申请前...

Posted by Zreal on December 24, 2018

windows下多线程实践

生产者消费者多线程实现 实验要求 可以随机设置生产者进程、消费者进程，以及缓冲区的数量；其中生产者进程、消费者进程，以及缓冲区的数量均不超过20；并且生产者进程、消费者进程、缓冲区均从0开始编号；程序中可以任意指定一种方式向缓冲区投放或取出产品，比如生产者向缓冲区以单元号循环方式投放产品。 ​ 2.随机输入生产产品的数量，能够输出正确的生产与消费过程，时间限制1秒（输入输...

Posted by Zreal on December 24, 2018

页式储存中页面置换算法

请求页式中的页面置换算法 要求 1.可以随机输入分配给一个进程的内存块数，以及该进程的页面访问序列，具体信息见测试用例格式输入部分说明。 2.分别采用最佳算法OPT（当有多个页面可置换时，按照先进先出原则进行置换）、先进先出算法FIFO和最近最久未用算法LRU进行页面置换，其中LRU算法采用栈式方法实现。 3.显示页面变化时内存块装入页面列表的详细情况，并显示是否产生页面置换，并计算...

Posted by Zreal on December 24, 2018

copy命令的实现

命令行copy命令的具体实现 要求 实现一个文件复制命令mycopy，能够支持多级目录（子目录）的复制，要能够支持Linux下的soft link和Windows下的快捷方式复制。 数据结构及算法流程 算法流程图： 数据结构： copy_dir类 ​ 首先定义了一个copy_dir类，文件夹所有的拷贝操作都封装在这个类之中，copy_dir给外界只提供一个copy的接...

Posted by Zreal on December 24, 2018

FEATURED TAGS
python TOEFL Reading C++ TOEFL Writing OS Design Pattern ML Hadoop JAVA Machine Learning Math
ABOUT ME

For the next quantum leap
离开世界之前，一切都是过程

FRIENDS