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352. Data Stream as Disjoint Interval
Given a data stream input of non-negative integers a1, a2, ..., an, ..., summarize the numbers seen so far as a list of disjoint intervals. For exampl ...
分类:其他好文   时间:2017-02-02 14:49:16    阅读次数:203
poj 3225 Help with Intervals(线段树,区间更新)
Help with Intervals Time Limit: 6000MS Memory Limit: 131072K Total Submissions: 12474 Accepted: 3140 Case Time Limit: 2000MS Description LogLoader, In ...
分类:其他好文   时间:2017-02-01 18:12:43    阅读次数:224
POJ 1201 Intervals(差分约束)
【题目链接】 http://poj.org/problem?id=1201 【题目大意】 告诉你一个区间至少要选定的数字的个数,给出n个区间的需求 问最少选取几个数字可以满足所有的需求 【题解】 对于区间[a,b]建立不等式Sb+1-Sa>=c,最后要求最小化Smax, 结合基础条件Si+1-Si> ...
分类:其他好文   时间:2017-01-23 22:57:24    阅读次数:209
闭区间套定理(Nested intervals theorem)讲解1
① ②这里用到了极限与不等关系 ③如果a≠b,那么便不会有$\lim _{n\rightarrow \infty }\left| I_n \right| =0$ ④如果还存在一点c在 内,那么同样也不会有$\lim _{n\rightarrow \infty }\left| I_n \right| ... ...
分类:其他好文   时间:2017-01-08 03:53:31    阅读次数:189
poj 3680 Intervals
给定N个带权的开区间,第i个区间覆盖区间(ai,bi),权值为wi。现在要求挑出一些区间使得总权值最大,并且满足实轴上任意一个点被覆盖不超过K次。 1<=K<=N<=200.1<=ai<bi<=100000.1<=wi<=100000. 最小费用最大流。 将所有区间端点离散化到整数1到M,每个数对应 ...
分类:其他好文   时间:2016-12-27 00:04:58    阅读次数:229
POJ1201 Intervals[差分约束系统]
Intervals Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 26028 Accepted: 9952 Description You are given n closed, integer intervals [ai, b ...
分类:其他好文   时间:2016-12-17 20:18:59    阅读次数:177
Leetcode: Find Right Interval
Solution 1: TreeMap, Time complexity: O(NlogN) 像这种在一个集合里面寻找有没有比某个数小的数,一般要么treeMap要么treeSet。Interval的题经常需要用treeMap, Data Stream as Disjoint Intervals 就 ...
分类:其他好文   时间:2016-12-07 07:45:00    阅读次数:208
Leetcode: Non-overlapping Intervals
Actually, the problem is the same as "Given a collection of intervals, find the maximum number of intervals that are non-overlapping." (the classic Gr ...
分类:移动开发   时间:2016-12-07 07:35:26    阅读次数:208
meeting room I & II
Given an array of meeting time intervals consisting of start and end times [[s1,e1],[s2,e2],...] (si < ei), determine if a person could attend all mee ...
分类:其他好文   时间:2016-12-01 07:45:43    阅读次数:192
Leetcode: Data Stream as Disjoint Intervals
TreeMap 解法: Use TreeMap to easily find the lower and higher keys, the key is the start of the interval.Merge the lower and higher intervals when neces ...
分类:其他好文   时间:2016-11-25 07:29:17    阅读次数:211
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