1. Search algorithm
1. Breadth search to solve the Jiugong problem: https://www.jianshu.com/p/9c39e80cc877 (As long as it is a picture, I have never understood why breadth search is needed)
1. Search algorithm
1. Breadth search to solve the Jiugong problem: https://www.jianshu.com/p/9c39e80cc877 (As long as it is a picture, I have never understood why breadth search is needed)