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线段树 + 区间更新: HDU 4893 Wow! Such Sequence!
Wow! Such Sequence!Time Limit: 10000/5000 MS (Java/Others)Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 2234Accepted Submission(s): 65...
分类:其他好文   时间:2014-08-01 13:19:31    阅读次数:215
HDU 1506 Largest Rectangle in a Histogram
Problem Description A histogram is a polygon composed of a sequence of rectangles aligned at a common base line. The rectangles have equal widths but may have different heights. For example, the fi...
分类:其他好文   时间:2014-08-01 09:16:21    阅读次数:280
Longest Consecutive Sequence
其实网上关于leetcode的题目的答案已经相当多了,这也是为啥我自己不把每道题目都贴出来的原因,觉得分析得没人好,代码也没别人的精简。不过,这道题目看到网上有不少做法跟实际要求的O(n)复杂度不太符合,所以特别粘贴出来,也正好记录下自己的一些想法。   说实话,在第二遍做这道题目的时候,我还是没能够把最为完善的解法想出来,能够想到的是利用hash表以序列值为key,1(只是简单做个标记)为v...
分类:其他好文   时间:2014-07-31 21:01:41    阅读次数:165
HDU - 1394 Minimum Inversion Number (线段树求逆序数)
Description The 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 the ...
分类:其他好文   时间:2014-07-31 13:31:46    阅读次数:229
HDU 4893 线段树的 点更新 区间求和
Wow! Such Sequence!Time Limit: 10000/5000 MS (Java/Others)Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 2067Accepted Submission(s): 61...
分类:其他好文   时间:2014-07-31 12:38:26    阅读次数:310
创建序列以及对应的视图
项目需要保证订单号的唯一 在使用时间生成时发现在业务量比较大的情况下,还是会出现重复情况 解决方案:创建一个序列表和视图 从视图中取 CREATE SEQUENCE general_order_no_seq INCREMENT 1 MINVALUE 1 MAXVALUE 9223372036854775807 START 1 CACHE 1;...
分类:其他好文   时间:2014-07-31 09:50:06    阅读次数:172
hdu-4893-Wow! Such Sequence!-线段树【2014多校第三场-J】
题意:一个初始为0的数组,支持三种操作:1、向第k个数添加d,(|d| 2 #include 3 #include 4 using namespace std; 5 #define maxn 100005 6 #define lson l, m, rt= x - fib[a-1]) re...
分类:其他好文   时间:2014-07-31 02:52:55    阅读次数:254
[LeetCode] Longest Consecutive Sequence(DP)
Given an unsorted array of integers, find the length of the longest consecutive elements sequence.For example,Given [100, 4, 200, 1, 3, 2], The longes...
分类:其他好文   时间:2014-07-31 02:19:45    阅读次数:243
HDU - 3117 Fibonacci Numbers
Description The Fibonacci sequence is the sequence of numbers such that every element is equal to the sum of the two previous elements, except for the first two elements f0 and f1 which are respect...
分类:其他好文   时间:2014-07-31 00:08:05    阅读次数:281
hdu 4893 Wow! Such Sequence!(线段树功能:单点更新,区间更新相邻较小斐波那契数)
hdu 4893 Wow! Such Sequence!(线段树功能:单点更新,区间更新相邻较小斐波那契数)...
分类:其他好文   时间:2014-07-31 00:04:15    阅读次数:269
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