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Linked.java
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87 lines (82 loc) · 1.28 KB
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import java.util.*;
class Node{
int data;
Node next;
}
public class Linked{
public static void main(String[] args){
LinkedLists list=new LinkedLists();
list.insert(18);
list.insert(45);
list.insert(12);
list.insertAtStart(25);
list.insertAt(0, 55);
list.deleteAt(2);
list.show();
}
}
class LinkedLists {
Node head;
public void insert(int data){
Node node=new Node();
node.data=data;
node.next=null;
if(head==null){
head=node;
}
else{
Node n=head;
while(n.next!=null)
{
n=n.next;
}
n.next=node;
}
}
public void insertAtStart(int data){
Node node=new Node();
node.data=data;
node.next=null;
node.next=head;
head=node;
}
public void insertAt(int index,int data){
Node node=new Node();
node.data=data;
node.next=null;
if(index==0){
insertAtStart(data);
}
else{
Node n=head;
for(int i=0;i<index-1;i++){
n=n.next;
}
node.next=n.next;
n.next=node;
}
}
public void deleteAt(int index){
if(index==0){
head=head.next;
}
else{
Node n=head;
Node n1=null;
for(int i=0;i<index-1;i++){
n=n.next;
}
n1=n.next;
n.next=n1.next;
n1=null;
}
}
public void show(){
Node n=head;
while(n.next!=null){
System.out.println(n.data);
n=n.next;
}
System.out.println(n.data);
}
}