Java: Insert some elements at the specified position into a linked list

Last update on May 22 2025 13:16:02 (UTC/GMT +8 hours)

9. Insert Elements at Position

Write a Java program to insert some elements at the specified position into a linked list.

Sample Solution:-

Java Code:

import java.util.LinkedList;
public class Exercise9 {
 public static void main(String[] args) {
  // create an empty linked list
  LinkedList <String> l_list = new LinkedList <String> ();
  // use add() method to add values in the linked list
  l_list.add("Red");
  l_list.add("Green");
  l_list.add("Black");

  // print original list
  System.out.println("Original linked list:" + l_list);

  // create a new collection and add some elements

  LinkedList <String> new_l_list = new LinkedList <String> ();
  new_l_list.add("White");
  new_l_list.add("Pink");

  // Add the collection in the second position of the existing linked list
  l_list.addAll(1, new_l_list);

  // print the new list
  System.out.println("LinkedList:" + l_list);
 }
}

Sample Output:

Original linked list:[Red, Green, Black]                               
LinkedList:[Red, White, Pink, Green, Black]

Pictorial Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to insert a collection of elements at a specified index in a linked list using addAll().
• Write a Java program to use recursion to insert multiple elements into a linked list at a given position.
• Write a Java program to insert elements at a specified position and then verify by printing the sublist starting at that index.
• Write a Java program to implement a method that inserts an element at a given index, shifting subsequent elements, and returns a boolean success flag.

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