摘要: Check if a given number is a perfect square with only addition orsubstraction operation.eg. 25 returns true; 19 returns false.Perfect square number 有一... 阅读全文
posted @ 2015-09-14 02:43 Dylan_Java_NYC 阅读(240) 评论(0) 推荐(0) 编辑
摘要: 原题链接在这里:https://leetcode.com/problems/unique-paths-ii/ 题目: A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram be 阅读全文
posted @ 2015-09-14 01:39 Dylan_Java_NYC 阅读(280) 评论(0) 推荐(0) 编辑