public class Sum{
    public int GetSum(int a, int b){
      //Good luck!
     int sum = 0;
     if (a==b){
     return a;
     }// close if
     else{
       for (int i=b; i<=a;i++){
         sum+=i;
         }// close else
    	} // close for loop
      return sum;
  	} // closee GetSum
} // close class