- Java Programming Examples
- Example - Home
- Example - Environment
- Example - Strings
- Example - Arrays
- Example - Date & Time
- Example - Methods
- Example - Files
- Example - Directories
- Example - Exceptions
- Example - Data Structure
- Example - Collections
- Example - Networking
- Example - Threading
- Example - Applets
- Example - Simple GUI
- Example - JDBC
- Example - Regular Exp
- Example - Apache PDF Box
- Example - Apache POI PPT
- Example - Apache POI Excel
- Example - Apache POI Word
- Example - OpenCV
- Example - Apache Tika
- Example - iText
- Java Tutorial
- Java - Tutorial
- Java Useful Resources
- Java - Quick Guide
- Java - Useful Resources
How to search an element inside a linked list in Java
Problem Description
How to search an element inside a linked list?
Solution
Following example demonstrates how to search an element inside a linked list using linkedlistname.indexof(element) to get the first position of the element and linkedlistname.Lastindexof(elementname) to get the last position of the element inside the linked list.
import java.util.LinkedList; public class Main { public static void main(String[] args) { LinkedList<String> lList = new LinkedList<String>(); lList.add("1"); lList.add("2"); lList.add("3"); lList.add("4"); lList.add("5"); lList.add("2"); System.out.println("First index of 2 is:"+ lList.indexOf("2")); System.out.println("Last index of 2 is:"+ lList.lastIndexOf("2")); } }
Result
The above code sample will produce the following result.
First index of 2 is: 1 Last index of 2 is: 5
The following is an another example to search an element inside a linked list.
import java.util.LinkedList; public class Demo { public static void main(String args[]) { LinkedList<Integer> linkedlist1 = new LinkedList<>(); linkedlist1.add(001); linkedlist1.add(002); linkedlist1.add(003); linkedlist1.add(004); linkedlist1.add(005); linkedlist1.add(003); System.out.println("First index of 004 is : " + linkedlist1.indexOf(004)); System.out.println("Last index of 004 is : " + linkedlist1.lastIndexOf(004)); } }
Result
The above code sample will produce the following result.
First index of 004 is : 3 Last index of 004 is : 3
java_data_structure.htm
Advertisements