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56-Merge Intervals
【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].【analyze】1...
分类:其他好文   时间:2015-05-05 16:08:51    阅读次数:121
解题报告 之 POJ3680 Intervals
解题报告 之 POJ 3680 Intervals 最小费用流 标号法 ACM 负权边 You are given N weighted open intervals. The ith interval covers (ai, bi) and weighs wi. Your task is to pick some of the intervals to maximize the total weights under the limit that no point in the real axis is ...
分类:其他好文   时间:2015-05-02 12:33:21    阅读次数:184
ACM学习历程——HDU3333 Turing Tree(线段树 && 离线操作)
Problem DescriptionAfter inventing Turing Tree, 3xian always felt boring when solving problems about intervals, because Turing Tree could easily have ...
分类:其他好文   时间:2015-05-02 12:20:50    阅读次数:90
POJ 3225 (线段树 区间更新) Help with Intervals
这道题搞了好久,其实坑点挺多。。网上找了许多题解,发现思路其实都差不多,所以就不在重复了。推荐一篇比较好的题解,请戳这。另外,如果因为可能要更新多次,但最终查询只需要一次,所以没有写pushup函数,仅有一个pushdown。 1 #include 2 3 const int maxn =...
分类:其他好文   时间:2015-04-28 13:57:32    阅读次数:110
poj1716 Integer Intervals 贪心
#include #include #include using namespace std; struct node { int left,right; }c[10005]; bool cmp(node x,node y)//按照右端点排序 { if(x.right<y.right) return true; if(x.right==y.right&&x.left<y.left) ...
分类:其他好文   时间:2015-04-24 16:26:45    阅读次数:117
poj 1375 Intervals(解析几何 过圆外一点求与圆的切线)
题目大意:给出一个光源,给出一些圆,求投影区间。 如图,先可以求出角a,通过半径与PQ距离,而角b也可以求出。那么就可以求出两条切线与Y轴的夹角,分别为a+b,b-a。 之后利用角度求出各投影线段的左右顶点,排序判断即可。...
分类:其他好文   时间:2015-04-24 09:13:45    阅读次数:127
leetcode Merge Intervals
leetcode Merge Intervalsleetcode Merge Intervals思路:以区间的左边为键值, 对区间进行排序然后找出重复的部分, 如果重复就判断是否需要更新区间如果没有重复就将当前的区间加入到 vector 中/** * Definition for an interv...
分类:其他好文   时间:2015-04-23 01:48:17    阅读次数:156
[LeetCode]57.Insert Interval
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.Example...
分类:其他好文   时间:2015-04-22 18:34:17    阅读次数:125
【LeetCode】Insert Interval 解题报告
【题目】 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 t...
分类:其他好文   时间:2015-04-07 17:37:24    阅读次数:118
[Leetcode][Python]56: Merge Intervals
# -*- coding: utf8 -*-'''__author__ = 'dabay.wang@gmail.com'56: Merge Intervalshttps://oj.leetcode.com/problems/merge-intervals/Given a collection of ...
分类:编程语言   时间:2015-04-07 07:08:17    阅读次数:158
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