LeetCode OJ:Insert Interval

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], insert and merge [2,5] in as [1,5],[6,9].

Example 2:
Given [1,2],[3,5],[6,7],[8,10],[12,16], insert and merge [4,9] in as [1,2],[3,10],[12,16].

This is because the new interval [4,9] overlaps with [3,5],[6,7],[8,10].


class Solution {  
public:  
    vector<Interval> insert(vector<Interval> &intervals, Interval newInterval) {  
        vector<Interval> result;
        
        for(int i=0;i<intervals.size();i++) {  
            if(intervals[i].end < newInterval.start) {  
                result.push_back(intervals[i]);  
            } 
            else if(intervals[i].start > newInterval.end) {  
                result.push_back(newInterval);  
                result.insert(result.end(),intervals.begin()+i,intervals.end());  
                return result;  
            } 
            else {  
                newInterval.start = min(newInterval.start, intervals[i].start);  
                newInterval.end = max(newInterval.end, intervals[i].end);  
            }  
        }  
        result.push_back(newInterval);   
        return result;  
    }  
};


LeetCode OJ:Insert Interval

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