2018年2月9日
LeetCode 441. Arranging Coins
摘要： You have a total of n coins that you want to form in a staircase shape, where every k-th row must have exactly k coins. Given n, find the total number 阅读全文
posted @ 2018-02-09 11:35 Jimmy_Cheng 阅读(236) 评论(0) 推荐(0) 编辑