DIY: Open Lock
Explore how to solve the open lock challenge by calculating the minimum number of rotations needed to reach the target code without hitting dead ends. This lesson helps you develop problem-solving skills applicable to coding interviews, focusing on efficient state traversal and constraints handling.
We'll cover the following...
We'll cover the following...
Problem statement
You have an old lock in front of you with four circular wheels. Each wheel has ten slots: '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'. The wheels can rotate freely and wrap around. For example, we can turn '9' to be '0' or '0' to be '9'. Each move consists of ...