大都是自定义了 Interval的比较方法. 突发奇想 int [] arr=new int[intervals.Count*2]; for(int i=0;i<intervals.Count;i++) { arr[i*2]=intervals[i].start*10+1; arr[i*2+1]=intervals[i].end*10+2; } Array.Sort(arr); IList<Interval> list=new List<Interval>(); int s=…

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]. 看起来感觉不像hard类型的题目,不过要注意的一点是这里给出的数据不一定会像上面这样按照顺序来进行排序,所以处理前首先要按照一定的规则处理一下,写一个functor来进行比较,用struct即可,排序后这个范围就很好确…

题目:合并区间 难度:Medium 题目内容:   Given a collection of intervals, merge all overlapping intervals. 翻译: 给定一个区间的集合,合并所有重叠的区间. Example 1: Input: [[1,3],[2,6],[8,10],[15,18]] Output: [[1,6],[8,10],[15,18]] Example 2: Input: [[1,4],[4,5]] Output: [[1,5]] 我的思路:因为…

leetcode-56. Merge Intervals - Medium descrition 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]. 解析 两个思路,都比较有难度.注意算法正确性的证明. 方法 1 - 连通分支 通过图的方法来解决.算法描述如下: 以每…

Interval的合并时比较常见的一类题目,网上的Amazon面经上也有面试这道题的记录.这里以LeetCode上的例题做练习. Merge Intervals 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 inter…

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]. 思路:开始想用线段树,后来想想这个不是动态变化的没必要. 按区间的第一个值从小到大排序,然后跳过后面被覆盖的区间来找. sort折腾了好久,开始搞不定只好自己写了一个归并排序.现在代码里的sort是可用的. class…

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 1: Given intervals [1,3],[6,9], i…

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 1:Given intervals [1,3],[6,9], insert and merge […

Merge Intervals 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]. 解题思路: 根据start对区间进行排序,然后依次遍历进行区间合并. /** * Definition for an interval. * struct Interval { * int…

Insert Intervals Given a non-overlapping interval list which is sorted by start point. Insert a new interval into it, make sure the list is still in order and non-overlapping (merge intervals if necessary). Example Insert [2, 5] into [[1,2], [5,9]],…