Python computer secondary notes

Data structure part:

Binary tree

(Non-original) Sorting out the information given by the teacher:
Code operation questions, do all of them, 20 points for this kind of questions are very important. The 40-point multiple-choice question needs at least 25 points, otherwise it will definitely not pass. One is because of the test requirements, and the other is the last operation question with 20 points. It is difficult.

  1. You can only enter the multiple-choice answer once, because there are more than ten questions to examine the results of the code. This is to prevent candidates from running in the py environment to see the results. Unless the multiple choice interface is stuck or crashes

  2. When filling in the blanks in the operation questions, remove the underscores and fill in the correct codes to ensure that all codes can run correctly. Where the running input content is given on the title, you must press this input operation

  3. Where the operation questions involve inputting and outputting txt files, the contents of these files cannot be changed. Write the code as required, open the output txt file to check after running

  4. After logging in to the exam system, the candidate folders have been associated. During the answering process, edit and save all py files, never move or save them, so as not to store the answer results in a folder other than candidates

  5. In all the answering process, strictly follow the requirements of the title, especially fill in the blanks, only change the underline, do not add, delete, or delete comments, because when marking the paper, strictly find the first few lines of the py file to check the string (fill in the blank) is it right or not

  6. The content of the exam is of average difficulty, but it covers a wide range. Each test will have an additional question bank, which may be 2-3 sets of questions, and the others have been tested before. The purpose of the mock question bank is to test the environment before the exam. Students are not forbidden to practice. There is only one set of questions for each subject. The probability of this set of questions in the formal exam is low, but the overall difficulty and scope are consistent. Although there are all the question banks that have been tested on the Internet, please be careful not to leak this set of questions, so as to avoid unnecessary troubles that may exist!

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Origin blog.csdn.net/weixin_45934622/article/details/114994661