滑动窗口（Java版本）

    public ArrayList<ArrayList<Integer> > FindContinuousSequence(int sum) {
        ArrayList<ArrayList<Integer>> res = new ArrayList<>();
        int left = 1,right = 1;
        int temp = 0;
        while(left <= sum/2){
            if(temp < sum){
                temp += right;
                right++;
            }else if(temp > sum){
                temp -=left;
                left++;
            }else{
                ArrayList<Integer> ans = new ArrayList<>();
                for(int k = left;k<right;k++){
                    ans.add(k);
                }
                res.add(ans);
                temp -= left;
                left++;
            }
        }
        return res;
    }