class Solution {
    public List<List<Integer> > findContinuousSequence(int sum) {
          List<List<Integer> > res=new ArrayList<>();
          int i=1,j=1,value=0;
          while(j<sum){
              value+=j;
              j++;
              while(value>sum){
                  value-=i;
                  i++;
              }
             if(value==sum){
                 List<Integer>list=new ArrayList<>();
                 for(int k=i;k<j;k++) list.add(k);
                 res.add(new ArrayList<>(list));
             }
          }
          return res;
    }
}