Given a set ofnon-overlappingintervals, insert a new interval into the intervals (merge if necessary).You may assume that the intervals were initially...
分类:
其他好文 时间:
2015-01-28 11:05:10
阅读次数:
194
题目大意:给你N个整数点构成的区间[ai,bi](ai,bi都为整数),在区间[ai,bi]上最少选ci个点。
ci可在区间[ai,bi]中随意取,但是不能重复。问:要满足在N个区间取点,至少要选多少个点。
思路:差分约束思想。设Si为前i项的整数个数,则S(bi) - S(ai-1) >= ci。还有两个隐含约束条件
S(i-1) - S(i) <= 0,S(i)-S(i-1) <= 1。把这三种约束构建一个差分约束系统,用SPFA求最短路径。...
分类:
其他好文 时间:
2015-01-27 00:34:49
阅读次数:
184
原题地址排序+合并,没啥好说的第一次尝试C++的lambda表达式,有种写js的感觉,很神奇c11就支持了lambda表达式,仔细想想,我学C++大概就是在09~10年,c11还没有发布,不得不说C++跟当时已经大不一样了。代码: 1 vector merge(vector &intervals) ...
分类:
其他好文 时间:
2015-01-23 17:49:15
阅读次数:
160
原题地址遍历每个区间intervals[i]:如果intervals[i]在newInterval的左边,且没有交集,把intervals[i]插入result如果intervals[i]在newInterval的右边,且没有交集,如果newInterval还没插入,则将newInterval插入r...
分类:
其他好文 时间:
2015-01-23 16:06:10
阅读次数:
135
Given a collection of intervals, merge all overlapping intervals.For example,Given[1,3],[2,6],[8,10],[15,18],return[1,6],[8,10],[15,18]. 1 /** 2 * De....
分类:
其他好文 时间:
2015-01-16 23:33:59
阅读次数:
168
Given a set of non-overlapping intervals, insert a new interval into the intervals (merge if necessary).
You may assume that the intervals were initially sorted according to their start times.
E...
分类:
其他好文 时间:
2015-01-16 13:13:25
阅读次数:
154
Given a collection of intervals, merge all overlapping intervals.
For example,
Given [1,3],[2,6],[8,10],[15,18],
return [1,6],[8,10],[15,18].
/**
* Definition for an interval.
* struct Inter...
分类:
其他好文 时间:
2015-01-16 11:23:21
阅读次数:
136
The problem:Given a set ofnon-overlappingintervals, insert a new interval into the intervals (merge if necessary).You may assume that the intervals we...
分类:
其他好文 时间:
2015-01-15 07:03:27
阅读次数:
171
The problem:Given a collection of intervals, merge all overlapping intervals.For example,Given[1,3],[2,6],[8,10],[15,18],return[1,6],[8,10],[15,18].My...
分类:
其他好文 时间:
2015-01-15 01:41:42
阅读次数:
195
【题目】
Given a collection of intervals, merge all overlapping intervals.
For example,
Given [1,3],[2,6],[8,10],[15,18],
return [1,6],[8,10],[15,18].
【分析】
(1)先将目标区间数组按X轴从小到大排序。例如:[2,3] [1,2] ...
分类:
其他好文 时间:
2015-01-14 21:26:19
阅读次数:
169