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Java Program to search an element in a singly linked list

Java Program to search an element in a singly linked list

In this example, we will create a java program to search a node in the given singly linked list.

Program:


public class Main 
{  
class Node{  
int data;  
Node next;  
public Node(int data) {  
this.data = data;  
this.next = null;  
}  
}  
public Node head = null;  
public Node tail = null;  
public void addNode(int data) {  
Node newNode = new Node(data);  
if(head == null) {  
head = newNode;  
tail = newNode;  
}  
else {  
tail.next = newNode;  
tail = newNode;  
}  
}  
public void searchNode(int data) {  
Node current = head;  
int i = 1;  
boolean flag = false;  
if(head == null) {  
System.out.println("List is empty");  
}  
else {  
while(current != null) {  
if(current.data == data) {  
flag = true;  
break;  
}  
i++;  
current = current.next;  
}  
}  
if(flag)  
System.out.println("Element is present in the list at the position : " + i);  
else  
System.out.println("Element is not present in the list");  
}  

public static void main(String[] args) {  

Main sList = new Main();  

sList.addNode(1);  
sList.addNode(2);  
sList.addNode(3);  
sList.addNode(4);  

sList.searchNode(2);  
sList.searchNode(7);  
}}

Output:-
Element is present in the list at the position : 2
Element is not present in the list

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