First, the existing table A , the top two in each class query total score (write SQL )
| class |
Full name |
Language performance |
Math scores |
English results |
| 1 |
Joe Smith |
20 |
30 |
40 |
| 2 |
John Doe |
40 |
20 |
30 |
| 3 |
Wang Wu |
50 |
10 |
80 |
| 2 |
Zhao six |
90 |
40 |
30 |
| 1 |
SUN seven |
86 |
72 |
23 |
| 2 |
Money eight |
42 |
57 |
10 |
| 3 |
Week ten |
58 |
54 |
27 |
Second, the courier to receive thousands of daily logistics alone, varying the weight of each of logistics alone. Now Express train driver drove next to Pharaoh standard trucks (load limit of 5 tons, with 5 tons, without considering the high limit), you want to take away as much as possible one-time heavy goods, these goods are mahogany sofa with steel, etc. . (Step pseudo-code can be written)
| product number |
Cargo weight (unit: kg ) |
| 1 |
509 |
| 2 |
838 |
| 3 |
924 |
| 4 |
650 |
| 5 |
604 |
| 6 |
793 |
| 7 |
564 |
| 8 |
651 |
| 9 |
697 |
| 10 |
649 |
| 11 |
747 |
| 12 |
787 |
| 13 |
701 |
| 14 |
605 |
| 15 |
644 |
to sum up:
This is a Tianjin company specializing also went to Tianjin; the interview, ask something about Redis , RabbitMQ , and GIT version control tool, call the front and rear ends of the url, upload the code duplication process, Maven , then that is inside the code that implements the project, the company's main interview a large number of data processing, database with the algorithm requirements are quite strict, especially the rapid sequencing; or finally feel worse, so come back and so on notice, and the game is. But for their own shortcomings it more clear, mainly database, some applications of the basic algorithm, there is the realization of the project business code;
------------------- August 27, 2019