摘要：
Given a 2D array , each cell is 0 (representing sea) or 1 (representing land) A move consists of walking from one land square 4 directionally to anoth 阅读全文
摘要：
We are given a linked list with as the first node. Let's number the nodes in the list: etc. Each node may have a next larger value: for , is the such 阅读全文
