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24. Swap Nodes in Pairs
题目: Given a linked list, swap every two adjacent nodes and return its head. For example,Given 1->2->3->4, you should return the list as 2->1->4->3. Yo ...
分类:其他好文   时间:2017-06-02 22:01:51    阅读次数:101
(博弈\sg) Codeforces Round #417 (Div. 2) E Sagheer and Apple Tree
Sagheer is playing a game with his best friend Soliman. He brought a tree with n nodes numbered from 1 to n and rooted at node 1. The i-th node has ai ...
分类:移动开发   时间:2017-06-02 11:32:42    阅读次数:241
532. K-diff Pairs in an Array
https://leetcode.com/problems/k-diff-pairs-in-an-array/#/description This is a very simple question. With two-pointer method, the time complexity is O ...
分类:其他好文   时间:2017-05-31 10:21:51    阅读次数:131
收集几个打算做的kaggle比赛
1. Display Advertising Challenge 目测是关于广告CTR预估的。 。新实习看起来是做广告的,恶补一个。 2. Quora Question Pairs 美丽的小姐姐给我推荐的比赛,判断两个quora上的问题是否是一样的。一颗赛艇。 ...
分类:其他好文   时间:2017-05-29 22:53:27    阅读次数:214
算法导论 practice4
1、bellman-ford算法 对每条边松弛|V|-1次。 运行结果如下: (实现的例子) 2、All-pairs shortest path (choose one from the three algorithms) (实现的例子) 运行结果: 3、8-queen problem (back ...
分类:编程语言   时间:2017-05-29 16:36:01    阅读次数:312
ZOJ Monthly, November 2012
A.ZOJ 3666 Alice and Bob 组合博弈,SG函数应用 #include<vector> #include<cstdio> #include<cstring> #include<algorithm> using namespace std; const int maxn = 100 ...
分类:其他好文   时间:2017-05-29 11:06:26    阅读次数:212
leetcode链表--16、swap-nodes-in-pairs(成对交换链表结点)
题目描述 Given a linked list, swap every two adjacent nodes and return its head. For example, Given1->2->3->4, you should return the list as2->1->4->3. Yo ...
分类:其他好文   时间:2017-05-29 10:01:05    阅读次数:191
2017北大校赛 J题 pairs
题目链接 http://poj.openjudge.cn/practice/C17J/ orz 原来是一道无脑枚举题目 只是很卡常数而已 复杂度算错也是很醉orz 当时怎么没想着优化常数呢 题解:枚举x,p,y,就可以了 当然,普通暴力枚举肯定会超时,复杂度是M^1.5 (一开始算的是M^1.5lo ...
分类:其他好文   时间:2017-05-28 23:47:21    阅读次数:240
561. Array Partition I
Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, b1), (a2, b2), ..., (an, bn) which makes sum of ...
分类:其他好文   时间:2017-05-28 21:42:41    阅读次数:249
LeetCode 561. Array Partition I(easy难度c++)
题目: Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, b1), (a2, b2), …, (an, bn) which makes sum o ...
分类:编程语言   时间:2017-05-27 23:05:23    阅读次数:349
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