![* @version 1.6.0
* @author Annal Sheeba Rani
*/
//To create a class Lisp using to perfom car()&cdr()functions
public class Lisp {
//To perform car() function
public int car(List l){
Object ob=l.get(0);
String st=ob.toString();
System.out.println("Using a L.car() function");
return Integer.parseInt(st);
}
//To perform cdr() function
public List cdr(List l){
Object ob=l.remove(0);
Object obj[]=l.toArray();
System.out.println("Using a L.cdr() function");
List list=Arrays.asList(obj);
return list;
}
public static void main(String[] args)
{
// To add the integer value in the ArrayList
List<Integer> l=new ArrayList<Integer>();
l.add(3);](https://image.slidesharecdn.com/ex3-lisplikelistinjava-120512233919-phpapp02/85/Ex3-lisp-likelist-in-java-2-320.jpg)
![l.add(0);
l.add(2);
l.add(5);
//To print the Return values of Car(),Cdr()functions
Lisp L=new Lisp();
int val=L.car(l);
System.out.println(val);
List list=L.cdr(l);
System.out.print(list);
}
}
OUTPUT:
Using a L.car() function
3
Using a L.cdr() function
[0, 2, 5]](https://image.slidesharecdn.com/ex3-lisplikelistinjava-120512233919-phpapp02/85/Ex3-lisp-likelist-in-java-3-320.jpg)
Ex3 lisp likelist in java
- 1. 3.Implementation of Lisp_like list in java AIM: To write a java program to implement the lisp_like list in java. ALGORITHM: 1.To implement the necessary packages needed. 2.Implement the lisp_like list in java to perform functions like that car(),cdr() 3.Car() function The car of a list is, quite simply, the first item in the list. Thus the car of the list (rose violet daisy buttercup) is rose. Example: (car '(rose violet daisy buttercup)) •After evaluating the expression, rose will appear in the echo area. 4.Cdr() function •The cdr of a list is the rest of the list, that is, the cdr function returns the part of the list that follows the first item. Example: (cdr '(rose violet daisy buttercup)) •When you evaluate this, (violet daisy buttercup) will appear in the echo area. 5.To create a arraylist and add the integer values 6.To perform the car()&cdr() functions in above method ; 7.Print the outputs and terminate the program. PROGRAM: import java.util.*; /**
- 2. * @version 1.6.0 * @author Annal Sheeba Rani */ //To create a class Lisp using to perfom car()&cdr()functions public class Lisp { //To perform car() function public int car(List l){ Object ob=l.get(0); String st=ob.toString(); System.out.println("Using a L.car() function"); return Integer.parseInt(st); } //To perform cdr() function public List cdr(List l){ Object ob=l.remove(0); Object obj[]=l.toArray(); System.out.println("Using a L.cdr() function"); List list=Arrays.asList(obj); return list; } public static void main(String[] args) { // To add the integer value in the ArrayList List<Integer> l=new ArrayList<Integer>(); l.add(3);
- 3. l.add(0); l.add(2); l.add(5); //To print the Return values of Car(),Cdr()functions Lisp L=new Lisp(); int val=L.car(l); System.out.println(val); List list=L.cdr(l); System.out.print(list); } } OUTPUT: Using a L.car() function 3 Using a L.cdr() function [0, 2, 5]