题解 | #和为S的连续正数序列#

import java.util.ArrayList;
public class Solution {
    public ArrayList<ArrayList<Integer> > FindContinuousSequence(int sum) {
    ArrayList<ArrayList<Integer>> list = new ArrayList<>();
        for(int i=1,j=1,s=1;i<sum;i++){
          while(s<sum){
              j++;
              s+=j;
             }
          if((s==sum)&&(j-i>0)){
              ArrayList<Integer> mlist =new ArrayList<>();
              for(int k=i;k<=j;k++){
                  mlist.add(k);
              }
              list.add(mlist);

          }
            s-=i;
      }
        return list;
    }
}