Question

Write a Scheme function DEL-LELEMENT that takes a list as a parameter and returns a list identical to the parameter except the last element has been deleted. For example, (DEL-LELEMENT '(8 2 3 7 6)) should return (8 2 3 7) *Please explain your code and submit the source code. Please test the function with the provided example and submit a screen shot of the testing result.

Answer 1

As you have not given any particular language, I am executing this problem in Java using ArrayList. Refer to the comments for explanation.

PROGRAM

import java.util.List;
import java.util.ArrayList;
  
public class Main
{
//function that deletes last element of list
public static ArrayList<Integer> delElement(ArrayList<Integer> list) {
list.remove(list.size()-1); //remove last element by getting the last index of list
return list; //returning list
}
public static void main(String[] args)
{
ArrayList<Integer> list = new ArrayList<>(); //new ArrayList
//adding elements in Arraylist
list.add(16);
list.add(24);
list.add(12);
list.add(68);
list.add(7);

System.out.println("ArrayList : " + list); //printing the original ArrayList
  
//printing the list after deleting the last element
System.out.println("\nModified ArrayList : " + delElement(list));
}
}