2017年6月11日
Balanced Binary Tree Leetcode
摘要： Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as a binary tree in which the dept 阅读全文
posted @ 2017-06-11 23:30 璨璨要好好学习 阅读(129) 评论(0) 推荐(0)
First Unique Character in a String
摘要： Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: s = "leetcode" return 0. 阅读全文
posted @ 2017-06-11 04:12 璨璨要好好学习 阅读(176) 评论(0) 推荐(0)
Island Perimeter Leetcode
摘要： You are given a map in form of a two-dimensional integer grid where 1 represents land and 0 represents water. Grid cells are connected horizontally/ve 阅读全文
posted @ 2017-06-11 03:41 璨璨要好好学习 阅读(179) 评论(0) 推荐(0)