2017-08-28 LOGO 海龟作画 系列三 递归画一个国际象棋棋盘 Logo Turtle Graphics - Series 3 - Recursively drawing a chess board cn
2017-08-06 Software Engineer Interview Question - How Many Ways from A to C via B? 软件工程师面试技巧之 从A到B再到C有多少种方法? cn
