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How to insert an element at the beginning of a LinkedList in Java

2 Answers

0 votes
import java.util.LinkedList;
 
public class Program {
    public static void main(String[] args) {
        LinkedList llist = new LinkedList();

        llist.add("1");
        llist.add("2");
        llist.add("3");
        llist.add("4");
        llist.add("5");
        llist.add("6");
        llist.add("7");
 
        System.out.println(llist);
 
        llist.addFirst("0");
         
        System.out.println(llist);
    }
}
  
  
  
/*
run:
  
[1, 2, 3, 4, 5, 6, 7]
[0, 1, 2, 3, 4, 5, 6, 7]
  
*/

 



answered Sep 29, 2016 by avibootz
edited Feb 27, 2024 by avibootz
0 votes
import java.util.LinkedList;
  
public class Program {
    public static void main(String[] args) {
        LinkedList llist = new LinkedList();
 
        llist.add(-89);
        llist.add("Java");
        llist.add(10923921);
        llist.add("C");
        llist.add(true);
        llist.add("C++");
        llist.add(3.14);
 
        System.out.println(llist);
 
        llist.addFirst("python");
 
        System.out.println(llist);
    }
}
   
   
   
/*
run:
   
[-89, Java, 10923921, C, true, C++, 3.14]
[python, -89, Java, 10923921, C, true, C++, 3.14]
   
*/

 



answered Feb 27, 2024 by avibootz

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