摘要:
DescriptionGiven a undirected graph, a node and a target, return the nearest node to given node which value of it is target, return NULL if you can't 阅读全文
摘要:
题目: Given a 2d grid map of '1's (land) and '0's (water), count the number of islands. An island is surrounded by water and is formed by connecting adj 阅读全文