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ZOJ 3827 Information Entropy 水
水 Information Entropy Time Limit: 2 Seconds      Memory Limit: 65536 KB      Special Judge Information Theory is one of the most popular courses in Marjar University. In this course, th...
分类:其他好文   时间:2014-10-15 02:12:09    阅读次数:470
PLSQL_性能优化系列14_Oracle High Water Level高水位分析
2014-10-04 BaoXinjian一、摘要高水位线好比水库中储水的水位线,用于描述数据库中段的扩展方式。高水位线对全表扫描方式有着至关重要的影响。当使用delete 操作表记录时,高水位线并不会下降,随之导致的是全表扫描的实际开销并没有任何减少。本文给出高水位线的描述,如何降低高水位线,以及...
分类:数据库   时间:2014-10-14 22:18:30    阅读次数:263
[POI 2001+2014acm上海邀请赛]Gold Mine/Beam Cannon 线段树+扫描线
DescriptionByteman, one of the most deserving employee of The Goldmine of Byteland, is about to retire by the end of the year. The Goldmine management...
分类:其他好文   时间:2014-10-14 17:24:48    阅读次数:323
LeetCode-Trapping Rain Water-下雨积水-单调队列应用
https://oj.leetcode.com/problems/trapping-rain-water/这道题使用单调队列能够O(n)时间解决。维护一个降序排列的单调队列。如果Ai>A[que.front]就说明能够使用que.front作为顶部计算一次积水。当从0-n时,须注意队列中还有元素。需...
分类:移动开发   时间:2014-10-14 17:22:58    阅读次数:261
leetcode - Plus One
Given a non-negative number represented as an array of digits, plus one to the number. The digits are stored such that the most significant digit is at the head of the list. class Solution { pub...
分类:其他好文   时间:2014-10-14 16:04:43    阅读次数:154
leetcode - Remove Duplicates from Sorted Array II
Follow up for "Remove Duplicates": What if duplicates are allowed at most twice? For example, Given sorted array A = [1,1,1,2,2,3], Your function should return length = 5, and A is now [1,1,2,...
分类:其他好文   时间:2014-10-12 19:42:38    阅读次数:141
zoj 3827 Information Entropy(2014牡丹江区域赛I题)
Information Entropy Time Limit: 2 Seconds      Memory Limit: 65536 KB      Special Judge Information Theory is one of the most popular courses in Marjar University. In this course, there is an i...
分类:其他好文   时间:2014-10-12 19:25:08    阅读次数:206
LeetCode Plus One
Given a non-negative number represented as an array of digits, plus one to the number.The digits are stored such that the most significant digit is at...
分类:其他好文   时间:2014-10-12 13:29:18    阅读次数:160
poj---(2886)Who Gets the Most Candies?(线段树+数论)
Who Gets the Most Candies?Time Limit: 5000MSMemory Limit: 131072KTotal Submissions: 10373Accepted: 3224Case Time Limit: 2000MSDescriptionN children ar...
分类:其他好文   时间:2014-10-12 01:18:06    阅读次数:322
PLSQL_性能优化系列16_Oracle High Water Level高水位分析
2014-10-04 BaoXinjian一、摘要高水位线好比水库中储水的水位线,用于描述数据库中段的扩展方式。高水位线对全表扫描方式有着至关重要的影响。当使用delete 操作表记录时,高水位线并不会下降,随之导致的是全表扫描的实际开销并没有任何减少。本文给出高水位线的描述,如何降低高水位线,以及...
分类:数据库   时间:2014-10-11 21:46:17    阅读次数:252
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