算法题单 https://leetcode.cn/circle/discuss/RvFUtj/
题解 + Python/Java/C++/Go 代码：
- Q1 https://leetcode.cn/problems/reverse-degree-of-a-string/solution/bian-li-pythonjavacgo-by-endlesscheng-a9sg/
- Q2 https://leetcode.cn/problems/maximize-active-section-with-trade-i/solution/yi-ci-bian-li-jian-ji-xie-fa-pythonjavac-o5dl/
- Q3 https://leetcode.cn/problems/minimum-cost-to-divide-array-into-subarrays/solution/hua-fen-xing-dp-shi-zi-bian-xing-pythonj-cwi9/
- Q4 https://leetcode.cn/problems/maximize-active-section-with-trade-ii/solution/qu-jian-zui-da-zhi-er-fen-cha-zhao-fen-l-n832/
具体请看 视频讲解，欢迎点赞关注~