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[LintCode] N-Queens
N-QueensThe n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other.Given an integer n, retu...
分类:其他好文   时间:2015-07-14 20:24:49    阅读次数:117
leetCode 51.N-Queens (n皇后问题) 解题思路和方法
N-Queens  The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other. Given an integer n, return all distinct solutions to the n-quee...
分类:其他好文   时间:2015-07-13 14:02:20    阅读次数:114
Quiz 2
def make_change(amount, coins): """Return a list of coins that sum to amount, preferring the smallest coins available and placing the smallest c...
分类:其他好文   时间:2015-07-12 00:03:57    阅读次数:165
leetcode-51-N-Queens
N-Queens The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other. Given an integer n, return all distinct solutions ...
分类:其他好文   时间:2015-06-27 09:50:33    阅读次数:120
Leetcode题解(7)L51/N-Queens
L51: N-Queens   The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other. Given an integer n, return all distinct solutions to the n-qu...
分类:其他好文   时间:2015-06-09 17:32:04    阅读次数:140
LeetCode51:N-Queens
The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other. ![这里写图片描述](http://img.blog.csdn.net/20150609105847270) Given an integer n, return...
分类:其他好文   时间:2015-06-09 11:54:45    阅读次数:125
uva 10859 Placing Lampposts,树形dp
// uva 10859 Placing Lampposts // 树形dp // // 题目的意思是一个无向无环图中,有一些顶点和一些边 // 要在顶点上放置灯笼(灯笼可以照亮与它相邻接的点), // 使得所有的边都能被灯笼照亮,其中可能有一些边被两个灯笼 // 照亮,则要求使得所有边都被灯笼照亮所需灯笼的最小值, // 并且,此时边同时被两个灯笼照亮的数目应尽可能的多 // // 思路是 //...
分类:其他好文   时间:2015-05-28 09:37:26    阅读次数:211
TP:2AAB85C3
Please prove that you are the blog's owner by placing this code somewhere in a post: TP:2AAB85C3 Place it somewhere where I can easily find it — you can remove the code in about 1-4 days....
分类:其他好文   时间:2015-04-27 16:54:00    阅读次数:136
UVa Placing Lampposts 树型DP
大致思路和大白书上的相同,不过感觉书上的决策部分讲解的并不是非常清楚,因此我在这里讲解一下我的决策思路。         首先,d(i,j)表示根节点为i的子树,当它的父节点为j(j=0或1)时的x的最小值(x的含义书上有讲解),要将该子树根节点和父节点相连的边的情况计算在内。接下来遍历森林中的每一棵树,对于每一棵树的根节点进行特别的处理,然后就对该树进行深度优先搜索dfs(i)。      ...
分类:其他好文   时间:2015-04-07 21:37:44    阅读次数:160
[LeetCode 51&52] N-Queens I & II (N皇后问题)
题目链接:n-queens import java.util.ArrayList; import java.util.Arrays; import java.util.List; /** * The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no t...
分类:其他好文   时间:2015-03-31 09:06:07    阅读次数:156
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