Roblox-罗布乐思 软件开发工程师 面经

流程：
1.自我介绍
2.问我为什么在项目里使用Kafka
3.做题，题目如下。我写不出来，直接就结束了。

Given a m*n grid, a start position (x0, y0), a target position (x1, y1).
Some grids are walkable (1) and other grids are obstacles (0). You control
a robot which can move in {up, down, left, right} 4 directions on walkable
grids. You need to output the length of shortest path to move the robot
from start position to target position.