BFS – Page 2 – 步步发财

Open the Lock – Python 3 (Week 12 – 13)

Time O(n). Space O(n).

Zombie in Matrix – Python 3 (Week 12 – 12)

Time O(nm). Space O(mn).

Walls and Gates – Python 3 (Week 12 – 11)

Time O(nm). Space O(nm).

Surrounded Regions – Python 3 (Week 12 – 10)

Solution 1 BFS Time O(n * m). Space O(n * m). Solution 2 BFS

Design a site like this with WordPress.com