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hdoj Cow Sorting
题意:给你n个无序的数,通过相邻的两个数交换,交换的价值是两个数之和,求使之increasing order的最小代价和 与poj3270不同的是poj可以每个数任意交换,可以用置换群来做 #include #include #include #include #include using namespace std; #define ll __int64 #define N 100000+1...
分类:其他好文   时间:2015-04-14 10:01:37    阅读次数:129
[Leetcode][JAVA] Convert Sorted Array to Binary Search Tree && Convert Sorted List to Binary Search Tree
Convert Sorted Array to Binary Search TreeGiven an array where elements are sorted in ascending order, convert it to a height balanced BST.很简单的二分法,只要给...
分类:编程语言   时间:2015-04-14 07:09:13    阅读次数:133
Add Two Numbers
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single ...
分类:其他好文   时间:2015-04-13 22:27:22    阅读次数:163
Codeforces Round #298 (Div. 2)
A. ExamAn exam fornstudents will take place in a long and narrow room, so the students will sit in a line in some order. The teacher suspect...
分类:其他好文   时间:2015-04-13 18:34:01    阅读次数:279
JS 笔记
http://eloquentjavascript.net/05_higher_order.html第五章作业题1.Use thereducemethod in combination with theconcatmethod to “flatten” an array of arrays into...
分类:Web程序   时间:2015-04-13 18:11:36    阅读次数:141
B表中的pid对应A表中id,查询A表中数据,根据b表中对应a表中该id的数据数目排序
B表中的pid对应A表中id,查询A表中数据,根据b表中对应a表中该id的数据数目排序select a.*,count(*) as c from a left join b on a.id=b.aid group by a.id ORDER BY c desc
分类:编程语言   时间:2015-04-13 18:08:25    阅读次数:144
Subsets -- leetcode
Given a set of distinct integers, S, return all possible subsets. Note: Elements in a subset must be in non-descending order.The solution set must not contain duplicate subsets. For exa...
分类:其他好文   时间:2015-04-13 16:46:47    阅读次数:130
OJ练习12——T27 Remove Element
删掉数组中与给出值相同的元素,返回新长度。“The order of elements can be changed. It doesn't matter what you leave beyond the new length.”(!这是重点提示!)【思路】题目有了第二句就很好办了,数组顺序可以改...
分类:其他好文   时间:2015-04-13 16:22:56    阅读次数:143
temp表空间的作用
temp表空间主要用途是进行排序运算[如创建索引、order by及group by、distinct、union/intersect/minus/、sort-merge及join、analyze命令]、索引[如创建索引、IMP进行数据导入]、访问视图等操作时提供临时的运算空间,当运算完成之后系统会自动清理。...
分类:其他好文   时间:2015-04-13 14:41:00    阅读次数:124
ZOJ3861:Valid Pattern Lock(DFS)
Pattern lock security is generally used in Android handsets instead of a password. The pattern lock can be set by joining points on a 3 × 3 matrix in a chosen order. The points of the matrix are reg...
分类:其他好文   时间:2015-04-12 22:44:13    阅读次数:204
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