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LeetCode Permutations II
class Solution { public: vector > permuteUnique(vector &num) { vector > result; if (num.size() path; dfs(n...
分类:其他好文   时间:2014-06-29 14:09:34    阅读次数:220
Permutation Sequence
The set[1,2,3,…,n]contains a total ofn! unique permutations.By listing and labeling all of the permutations in order,We get the following sequence (ie...
分类:其他好文   时间:2014-06-04 19:56:17    阅读次数:347
Permutations II
Given a collection of numbers that might contain duplicates, return all possible unique permutations.For example,[1,1,2]have the following unique perm...
分类:其他好文   时间:2014-06-04 19:10:54    阅读次数:240
Permutations
Given a collection of numbers, return all possible permutations.For example,[1,2,3]have the following permutations:[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,...
分类:其他好文   时间:2014-06-04 19:10:16    阅读次数:155
1001:A+B 输入输出练习II 分数: 2
1001:A+B 输入输出练习II 分数: 2 时间限制:1 秒内存限制:32 兆特殊判题: 否提交:112解决: 68题目描述你的任务是计算a+b。输入格式第一行是一个整数N,表示后面会有N行a和b,通过空格隔开。输出对于输入的每对a和b,你需要在相应的行输出a、b的和。如第二对a和b,对应的和也...
分类:其他好文   时间:2014-06-03 09:49:15    阅读次数:1634
Leetcode: Best Time to Buy and Sell Stock II
一次过,思路是:最大收益可以由所有上升序列差价叠加中获得 1 public class Solution { 2 public int maxProfit(int[] prices) { 3 int profit = 0; 4 if (prices.lengt...
分类:其他好文   时间:2014-05-29 20:43:33    阅读次数:254
Coursera algorithm II PA4
题意:所给数据中是否有负环? 没有负环的图中所有路径中最短的值思路:1. bellmanford 判断负环2.flodyWarshall 求所有定点的最短路径细节:1. bellmanford 算法时间复杂度为 o(n^3), 因为图的使用邻接矩阵存储的, 使用邻接表代码会容易理解些, 引用 wik...
分类:其他好文   时间:2014-05-29 20:41:30    阅读次数:237
Coursera Algorithm Part II PA2
题意:computing a max-spacingk-clustering.spacing 是指两个 cluster 之间的最小距离输入:[number_of_nodes][edge 1 node 1] [edge 1 node 2] [edge 1 cost][edge 2 node 1] [e...
分类:其他好文   时间:2014-05-29 20:40:30    阅读次数:323
Coursera Algorithm II PA2 Q2
题意:what is the largest value ofksuch that there is ak-clustering with spacing at least 3? That is, how many clusters are needed to ensure that no pair...
分类:其他好文   时间:2014-05-29 20:39:26    阅读次数:305
[leetcode]Subsets II @ Python
原题地址:https://oj.leetcode.com/problems/subsets-ii/题意:Given a collection of integers that might contain duplicates,S, return all possible subsets.Note:E...
分类:编程语言   时间:2014-05-29 19:10:53    阅读次数:278
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