2017年7月8日
[Leetcode] n queens ii n皇后问题
摘要： Follow up for N-Queens problem. Now, instead outputting board configurations, return the total number of distinct solutions. 题意：仅要求给出解的种数。 思路：这题是n que 阅读全文
posted @ 2017-07-08 16:54 王大咩的图书馆 阅读(181) 评论(0) 推荐(0)
[Leetcode] n queens n皇后问题
摘要： The n-queens puzzle is the problem of placing n queens on an n×nchessboard such that no two queens attack each other. Given an integer n, return all d 阅读全文
posted @ 2017-07-08 16:44 王大咩的图书馆 阅读(313) 评论(0) 推荐(0)
[Leetcode] set matrix zeroes 矩阵置零
摘要： Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place. click to show follow up. Follow up: Did you use extra sp 阅读全文
posted @ 2017-07-08 15:25 王大咩的图书馆 阅读(224) 评论(0) 推荐(0)
[Leetcode] word ladder 单词阶梯
摘要： Given two words (start and end), and a dictionary, find the length of shortest transformation sequence from start to end, such that: For example, Give 阅读全文
posted @ 2017-07-08 13:23 王大咩的图书馆 阅读(409) 评论(0) 推荐(1)