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Leetcode dfs Combinations
Combinations  Total Accepted: 18327 Total Submissions: 60479My Submissions Given two integers n and k, return all possible combinations of k numbers out of 1 ... n. For example, If n = 4...
分类:其他好文   时间:2014-09-01 01:40:32    阅读次数:204
【leetcode】Divide Two Integers
题目: Divide two integers without using multiplication, division and mod operator. 解析:...
分类:其他好文   时间:2014-08-31 22:58:02    阅读次数:246
乌拉姆数列 Euler167
昨天 yep 问了一个问题: For two positive integers a and b, the Ulam sequence U(a,b) is defined by U(a,b)1 = a, U(a,b)2 = b and for k > 2, U(a,b)k is the smallest integer greater than U(a,b)(k-1) which can...
分类:其他好文   时间:2014-08-31 20:07:21    阅读次数:359
INNER JOIN vs. CROSS APPLY
refer from :http://explainextended.com/2009/07/16/inner-join-vs-cross-apply/INNER JOINis the most used construct inSQL: it joins two tables together, ...
分类:移动开发   时间:2014-08-31 18:29:51    阅读次数:158
Merge Two Sorted Lists <LeetCode>
---恢复内容开始---Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lis...
分类:其他好文   时间:2014-08-31 17:01:51    阅读次数:270
UVA 11294 - Wedding(Two-Set)
UVA 11294 - Wedding 题目链接 题意:有n对夫妻,0号是公主,现在有一些通奸关系(男男,女女也是可能的)然后要求人分配在两侧,夫妻不能坐同一侧,并且公主对面一侧不能有两个同奸的人,问方案 思路:2-set,建图,一共2n个人,设偶数是丈夫,奇数是妻子,左侧为false,右侧为true,然后丈夫妻子建一条true false 或 false true的边,然后然公...
分类:其他好文   时间:2014-08-31 13:17:41    阅读次数:189
Median of Two Sorted Arrays
1 class Solution { 2 public: 3 double findMedianSortedArrays(int A[], int m, int B[], int n) { 4 vector v(m+n); 5 for(int i=0;i<m...
分类:其他好文   时间:2014-08-31 10:23:01    阅读次数:176
子集系列(二) 满足特定要求的子集,例 [LeetCode] Combination, Combination Sum I, II
引言既上一篇 子集系列(一)后,这里我们接着讨论带有附加条件的子集求解方法。这类题目也是求子集,只不过不是返回所有的自己,而往往是要求返回满足一定要求的子集。解这种类型的题目,其思路可以在上一篇文章的思路略作改进。例 1,求元素数量为定值的所有子集CombinationsGiven two inte...
分类:其他好文   时间:2014-08-31 07:06:10    阅读次数:304
Inheritance versus composition
One of the fundamental activities of an object-oriented design is establishing relationships between classes. Two fundamental ways to relate classes are inheritance and composition. Although the co...
分类:其他好文   时间:2014-08-30 19:16:10    阅读次数:279
[LeetCode] Gray Code
The gray code is a binary numeral system where two successive values differ in only one bit.Given a non-negative integernrepresenting the total number...
分类:其他好文   时间:2014-08-30 02:22:18    阅读次数:244
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