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Java Program to find the maximum and minimum value node from a linked list

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Java Program to find the maximum and minimum value node from a linked list

In this example, we will create a java program to find out the minimum and maximum value 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 minNode() {  
Node current = head;  
int min;  

if(head == null) {  
System.out.println("List is empty");  
}  
else {  
min = head.data;  

while(current != null){  
if(min > current.data) {  
 min = current.data;  
}  
current= current.next;  
}  
System.out.println("Minimum value node in the list: "+ min);  
}  
}  

public void maxNode() {  
Node current = head;  
int max;  

if(head == null) {  
System.out.println("List is empty");  
}  
else {  
max = head.data;  

while(current != null){  
if(max < current.data) {  
 max = current.data;  
}  
current = current.next;  
}  
System.out.println("Maximum value node in the list: "+ max);  
}  
}  

public static void main(String[] args) {  

Main sList = new Main();  

sList.addNode(5);  
sList.addNode(8);  
sList.addNode(1);  
sList.addNode(6);  

sList.minNode();  

sList.maxNode();  
}  
}

Output:-
Minimum value node in the list: 1
Maximum value node in the list: 8

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