Question

A. Write a recursive method that returns the sum of n to 1.

B. Declare two attributes of a Node<E> object

C. Give a line of code to create a node object that can create a double.

JAVA

Answer 1

//A
//recursive method that returns sum of n to 1
int sum(int n)
{
   if(n<=1)return n;
   return sum(n-1)+n;//recursive call
}

//B
class Node<E>
{
   //two attributes
   E data;
   Node<E> next;
}

//C
   Node<Double> node = new Node<Double>();