算法题单 https://leetcode.cn/circle/discuss/RvFUtj/
题解 + Python/Java/C++/Go 代码： Q1 https://leetcode.cn/problems/transform-array-by-parity/solution/nao-jin-ji-zhuan-wan-pythonjavacgo-by-en-h4hm/ Q2 https://leetcode.cn/problems/find-the-number-of-copy-arrays/solution/xiang-xi-shu-xue-tui-dao-pythonjavacgo-b-ggb3/ Q3 https://leetcode.cn/problems/find-minimum-cost-to-remove-array-elements/solution/jiao-ni-yi-bu-bu-si-kao-dpcong-ji-yi-hua-905d/ Q4 https://leetcode.cn/problems/permutations-iv/solution/cong-zuo-wang-you-gou-zao-pythonjavacgo-a0tqz/
具体请看 视频讲解，欢迎点赞关注~