Algorithm
- 283. Move Zeroes - LeetCode
- 832. Flipping an Image - LeetCode
- 590. N-ary Tree Postorder Traversal - LeetCode
- 23. Merge k Sorted Lists - LeetCode
- 876. Middle of the Linked List - LeetCode
- 442. Find All Duplicates in an Array - LeetCode
- 299. Bulls and Cows - LeetCode
Review
dd 命令通常用来克隆整块磁盘，或者制作 Linux 系统的 USB 启动盘。这篇文章教你怎么用，其实很简单。
How to use dd in Linux without destroying your disk
Tip
DDNS，动态域名服务，将家里的播号IP映射到域名上