Data Stream as Disjoint Interval | leetcode

/**
 * Definition for an interval.
 * struct Interval {
 *     int start;
 *     int end;
 *     Interval() : start(0), end(0) {}
 *     Interval(int s, int e) : start(s), end(e) {}
 * };
 */
class SummaryRanges {
public:
    /** Initialize your data structure here. */
    SummaryRanges() {
        inters = vector<Interval>();
        n=;
        //numbers = vector<int>();
    }

    void addNum(int val) {
        ++n;
        vector<Interval>::iterator it=inters.begin();
        while(it!=inters.end()){
            int start=it->start;
            int end=it->end;
            if(val>=start&&val<=end)
                break;
            if(val==start-){
                it->start=val;
                break;
            }
            if(val==end+){
                it->end=val;
                break;
            }
            ++it;
        }
        if(it==inters.end()){
            Interval temp=Interval(val,val);
            inters.push_back(temp);
        }
    }
    static bool compare(Interval i1,Interval i2){
        return i1.start<=i2.start;
    }
    vector<Interval> getIntervals() {
        //conbine those intervals
        sort(inters.begin(),inters.end(),compare);
        for(int i=;i<inters.size()-;){
            if(inters[i].end>=inters[i+].start-&&inters[i].end<=inters[i+].end){
                inters[i].end=inters[i+].end;
                inters.erase(inters.begin()+i+);
            }else
                ++i;
        }

        return inters;
    }
private:
    vector<Interval> inters;
    int n;
    //vector<int> numbers;
};

/**
 * Your SummaryRanges object will be instantiated and called as such:
 * SummaryRanges obj = new SummaryRanges();
 * obj.addNum(val);
 * vector<Interval> param_2 = obj.getIntervals();
 */