ko

import java.util.ArrayList;
public class Solution {
    public ArrayList<ArrayList<Integer> > FindContinuousSequence(int sum) {
        ArrayList<ArrayList<Integer>> res = new  ArrayList<>();
        int start=1,end=2,curSum=3;
        while(end <= sum/2+1){
            if(curSum<sum){
                end++;
                curSum+=end;
            }else if(curSum>sum){
                curSum-=start;
                start++;
            }else{
                ArrayList<Integer> tmp = new ArrayList<>();
                for(int i=start;i<=end;i++) tmp.add(i);
                res.add(tmp);
                curSum -= start;
                start++;
                end++;
                curSum+=end;
            }
        }
        return res;
    }
}