All-Pairs Testing is a test design method to deal with the combinatorics problem of defining test cases in a systematic way. 成对组合覆盖这一概念是Mandl于1985年在测试Aad编译程序时提出来的.Cohen等人应用成对组合覆盖测试技术对Unix中的“Sort”命令进行了测试.测试结果表明覆盖率高达90%以上.可见成对组合覆盖是一种非常有效的测试用例设计方法. 成对组合…

传送门 Problem Statement You are given a tree where each node is labeled from 1 to n. How many similar pairs(S) are there in this tree? A pair (A,B) is a similar pair if the following are true: node A is the ancestor of node B abs(A−B)≤T Input format: T…

作业提交时间:10月9日上课前. Design and implement an Elevator Scheduler to aim for both correctness and performance, in managed code. Skills to learn and practice: a)       Peer to peer collaboration b)       Requirement Analysis c)       Design by contract, Int…

RFID Exploration Louis Yi, Mary Ruthven, Kevin O'Toole, & Jay Patterson What did you do? We made an Radio Frequency ID (RFID) card reader and, while attempting to create a long-range spoofer, created an jammer which overcomes card's signals. The read…

Special subset sums: testing Let S(A) represent the sum of elements in set A of size n. We shall call it a special sum set if for any two non-empty disjoint subsets, B and C, the following properties are true: S(B) ≠ S(C); that is, sums of subsets ca…

Test Design Techniques - STATE BASED TESTING -Test note of “Essential Software Test Design” 2015-08-19 Content: 13.1 The Model  13.1.1 The ATM Machine13.2 Creating Base Test Cases  13.2.1 Ways of Covering the Graph  13.2.2 Coverage According to Chow …

COMBINATORIAL TESTING -Test note of “Essential Software Test Design” 2015-09-06 Content 16.1 Coverage16.2 Combination Strategies16.3 Input Parameter Modeling  16.3.1 Structural Input Parameter Modeling  16.3.2 Functional Input Parameter Modeling16.4…

In Problem 42 we dealt with triangular problems, in Problem 44 of Project Euler we deal with pentagonal number, I can only wonder if we have to deal with septagonal numbers in Problem 46. Anyway the problem reads Pentagonal numbers are generated by t…

今天的文章来自Jerry的同事,曾经的搭档郑晓霞(Zheng Kate).郑晓霞是在Jerry心中是一位很有实力的程序媛,2011年从西安某软件公司跳槽到SAP成都研究院.当时,成都研究院的CRM团队刚刚成立,Jerry和郑晓霞都在一个大组. 2012年夏天,我们接到任务,要把SAP Customer Briefing这款已经发布的iOS应用移植到Android平台.因为只有1年的期限,老板组建了一只特殊的开发团队,由Jerry, 郑晓霞和另外两位男同事组成.是的,因为需求很清楚,就是把iOS版…

DDR PHY interface bit error testing and training is provided for Double Data Rate memory systems. An integrated circuit comprises a bit error test (BERT) controller that provides a bit pattern; and a physical interface having a plurality of byte lane…