摘要： 原题链接在这里：https://leetcode.com/problems/minimum-knight-moves/ 题目： In an infinite chess board with coordinates from -infinity to +infinity, you have a kn 阅读全文

摘要： 原题链接在这里：https://leetcode.com/problems/shortest-bridge/ 题目： In a given 2D binary array A, there are two islands. (An island is a 4-directionally connec 阅读全文

摘要： 原题链接在这里：https://leetcode.com/problems/open-the-lock/ 题目： You have a lock in front of you with 4 circular wheels. Each wheel has 10 slots: '0', '1', '2 阅读全文