学习笔记：TCP滑动窗口的应用

输出所有和为S的连续正数序列。序列内按照从小至大的顺序，序列间按照开始数字从小到大的顺序

class Solution {
public:
    vector<vector<int> > FindContinuousSequence(int sum) {
        int low=1,high=2;
        vector<vector<int> > r;
        while(low<high){
            int s=(low+high)*(high-low+1)/2;
            if(s<sum)
                high++;
            else if(s == sum){
                vector<int >a;
                for(int i=low;i<=high;i++){
                    a.push_back(i);
                }
                r.push_back(a);
                low++;
            }
            else{
                low++;
            }
        }
        return r;
    }
};