**Since** many Chinese coders enjoy leetcode-cn.com rather than leetcode.com, [solutions to April 30-day challenge](https://blog.csdn.net/weixin_40005329/category_9872358.html) are not so easy to seek.\n\n**So** I\'d like to share my records of my 30-day tour and hope them helpful for someone who is looking for an \naggregation of those solutions:\n- [CSDN](https://blog.csdn.net/weixin_40005329/category_9872358.html)\n- [Blog](https://karlszp.github.io/)\n\n---\n\nLeetCoding Challenge a day, keep my confidence away XD.\n

Since many Chinese coders enjoy leetcode-cn.com rather than leetcode.com, solutions to April 30-day challenge are not so easy to seek.\n\nSo I\'d like to share 