2020 Software Engineering third work 03

GitHub project Address:

Software Engineering	https://edu.cnblogs.com/campus/zswxy/software-engineering-2017-1
Where this requirement in the job	https://https://edu.cnblogs.com/campus/zswxy/software-engineering-2017-1/homework/10494
The target job	And completion detecting means for detecting items Sudokudoku
Text of the job	Below
Other references	No thinking: https: //segmentfault.com/

	Personal Software Process Stages	Estimated time consuming	The actual time-consuming
Planning	plan	60 minutes	60 minutes
Estimate	This task needs to estimate how much time	Thirty-six hours	Seventy-two hours
Development	Develop	Five hours	Twenty-one hours
Analysis	Needs analysis (including learning new technologies)	Five hours	long time
Design Spec	Generate design documents	Two hours	Two hours
Design Review	Design Review	Two hours	Two hours
Coding Standard	Code specifications (development of appropriate norms for the current development)	60 minutes	30 minutes
Design	Specific design	Two hours	Five hours
Coding	Specific coding	Five hours	Seven hours
Code Review	Code Review	Two hours	Five hours
Test	Test (self-test, modify the code, submit modifications)	Six hours	Five hours
Reporting	report	60 minutes	Two hours
Test Report	testing report	60 minutes	60 minutes
Size Measurement	Computing workload	60 minutes	30 minutes
Postmortem & Process improvement Plan	Later summarized, and process improvement plan	Two hours	three hours
total		36 hours	72 hours

1 ### problem analysis, algorithm: see title, the first reaction is violent solution, using the numbers 1 to 9 have a rule can only appear in each row, each column, each palace. So we exclude each unit, the only place able to find a number there in a cell (row or column or block), in other words that the other unit in an empty space excluded. First, from the third to fifth grids grids difficulty is not big, but with the order of the grids increase in computing is growing. This method is also abandon me, then I saw the back filling algorithm on the Internet, I tried really can.