I\'m using leetcode for 7 months, and solved 450+ problems. But I still couldn\'t solve all the problems I\'ve met before, regardless of new problems. The progress I can see is for some complex dfs questions that I just don\'t even want to read the instructions, now I could give a try with brute-force solution, and sometimes it could AC. \nI really need some advice about how to use LeetCode better and how to learn to solve algo problems instead of memorizing solutions.\nI\'ve go into software engineering for one and a half year, but my coding ability is still week. How to improve? \nAny advices will be appreciated.

I\'m using leetcode for 7 months, and solved 450+ problems. But I still couldn\'t solve all the problems I\'ve met before, regardless of new problems. The progr