Divsion of responsibilities

Wei ZhiChen: Framework build and manage work, merge the code. Total test.
Luo Tian: grade 3-4: addition, subtraction, multiplication and division of integers and Unit test
Li ZongTan: select the probability of high grade question selection. Blog writting.
Wang YanXiang: grade 5-6:float point number question fucntion and Unit test
Pan HongZe: grade 1-2: addition and subtraction of integers within 100 function and Unit test

Enviroment

After dicussion, we decide to implement it using Java

Group leader enviroment

• Operating System: Windows 10
• Jave version: Jdk 13
• IDE:Eclipse

  PSP form

  PSP Stages	Estimated Time/minute	Completed Time/minute
  Planning	15	10
  Time Estimation	5	5
  Development	-	-
  Requirement Analysis	-	-
  Design Documents	-	-
  Design Review	-	-
  Code Specification	10	10
  Specific Design	-	-
  Specific Coding	40	35
  Code Review	-	-
  Test	20	30
  Presentation	10	10
  Test Report	-	-
  Calculation Workload	10	10
  Summary&Improvement	10	15
  Total	120	125

  TeamProgramming Experience

"1+1<2", we all get used to work alone

We take a lot of time to upload the code to github using git, but we meet many problems. Finally we decide to use by hands
The problem is not difficult🤔 ,but:

it is first time our group work together, the teamwork is really important for us, we first decide what should be done and divide the responsibilities. Finally we found our communication remain some detail problems, such like the work division need to write API( just function) , but many members write the main function, which is

public static void main(String args[]){
}

this has caused some difficulties in our code merging.

Approach

We think grade 6 still need to do the grade 1 problem, so we have a chance to combine the problem on high grade.
probability has
grade 12 No.1 100%
grade 34 No.1 30% No.2 70%
grade 56 No.1 10% No.2 30% No3.60%

problem manager to finish this task

Development Events

1.Git upload github problem

when I input

git push origin master

get the error code:403
We take 1 hour to slove, but the problem still remain.
Reason is simple, we don't familiar with the Git.

2.Java float point number dropout

There are errors in decimal addition, subtraction, multiplication and division. For example, 1.0 + 2.0 may be equal to 3.00000000000001, which is difficult to judge. Our group uses BigDecimal class to calculate the results more accurately

3. Codeing Standard

During merge, it is found that everyone has different programming habits and understanding of requirements, which takes a lot of time

4. Network

GitHub is difficult to submit. Due to a series of reasons such as network problems, it is difficult to submit team member programs when uploading to GitHub

5. Communication in detail

ref to TeamProgramming Experience.

Program Screenshot

Program

Group

Github link

Github https://github.com/Weisplendid/Oral-calculation-exercise

Commit record

• master(include deleted record)

• PHZ
  

  

• WYX