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[LeetCode] Swap Nodes in Pairs
https://oj.leetcode.com/problems/swap-nodes-in-pairs/ Given a linked list, swap every two adjacent nodes and return its head. For example,Given 1->2->...
分类:其他好文   时间:2015-03-04 19:03:40    阅读次数:145
hdu 5178 pairs(BC第一题,,方法不止一种,,我用lower_bound那种。。。)
题意:X坐标上有n个数。JOHN想知道有多少对数满足:x[a]-x[b]>T; while(T--){ cin>>n>>k; rep(i,1,n) scanf("%d",&x[i]); sort(x+1,x+1+n); ll ans=0;...
分类:其他好文   时间:2015-03-03 23:23:58    阅读次数:149
寒假D3 A Find the Lost Sock
Alice bought a lot of pairs of socks yesterday. But when she went home, she found that she has lost one of them. Each sock has a name which contains e...
分类:其他好文   时间:2015-03-01 22:21:59    阅读次数:286
HDU 5178 pairs 二分
传送门:http://acm.hdu.edu.cn/showproblem.php?pid=5178 pairs Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 320    Accepted Submission(...
分类:其他好文   时间:2015-03-01 17:08:08    阅读次数:283
poj 1470 Closest Common Ancestors LCA
题目链接:http://poj.org/problem?id=1470Write a program that takes as input a rooted tree and a list of pairs of vertices. For each pair (u,v) the program ...
分类:其他好文   时间:2015-02-28 17:55:04    阅读次数:143
leetcode——Swap Nodes in Pairs
思路1: class Solution { public: // 两个指针,p, q, q指向第二个,preP是p之前 ListNode *swapPairs(ListNode *head) { if(head == NULL) return NULL; auto p = head; auto q ...
分类:其他好文   时间:2015-02-26 13:10:49    阅读次数:133
[LeetCode]Swap Nodes in Pairs 成对交换
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.Your algor...
分类:其他好文   时间:2015-02-25 15:35:59    阅读次数:126
loj1236(数学)
传送门:Pairs Forming LCM题意:题意:问符合 lcm(i,j)=n (1#include #include #include #include #include #include #include #include #include #include #include #includ...
分类:其他好文   时间:2015-02-24 15:03:11    阅读次数:130
HDU1394 Minimum Inversion Number 线段树+数学
Problem DescriptionThe inversion number of a given number sequence a1, a2, …, an is the number of pairs (ai, aj) that satisfy i aj.For a given sequence of numbers a1, a2, …, an, if we move...
分类:其他好文   时间:2015-02-23 23:44:23    阅读次数:400
【SICP练习】69 练习2.40
?? 练习2.40 这道题要我们写一个传入一个整数n然后返回一个序对(i, j)的过程unique-pairs,然后用于上一页的prime-sum-pairs的定义。此时我们要注意在prime-sum-pairs中哪一段代码表达的是这个意思。没错,是flatmap函数。因此我们将其写入到unique-pairs中。 (define (unique-pairs n)    (...
分类:其他好文   时间:2015-02-23 09:45:37    阅读次数:155
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