Leetcode Brushing Questions--Introduction

Questions:

1. You can set a certain time to scan every day. The key point is to scan every day. After a few days, your sensitivity to the topic will decrease significantly (personal experience!).
2. Leetcode does not apply to every question, only the first few hundred questions on LeetCode.
3. Learn the data structure directly through the questions. Don't read the book from beginning to end and then brush the questions. It is inefficient, unmotivated, and too slow.
4. Don’t be stunned when you don’t understand, don’t be afraid to read other people’s solutions, just look directly, Copy the code directly, and then after understanding, write it again by yourself. Don't think this is bad. When you think about learning advanced mathematics, don't you write other exercises after reading the answers to the sample questions and doing the sample questions yourself?
5. Look at other people's summaries and take notes (the key).