LinkedList Implementation:
Below is the code snippet don't want to elaborate on what each of it, its self explanatory. Read it understand the constant. Its very essential to know how and what to alternate. Definite starter question to implement Linked-List in java in any core Java interview.
public
class Node{
Node
next;
int
data;
public
Node(int data) {
this.data
= data;
}
public
class LinkedList {
Node
head;
public
void append(int data) {
if
(head ==null){
head
= new Node(data);
return;
}
Node
current = head;
while
(current.next != null) {
current
= current.next;
}
current.next
= new Node(data);
}
public
void prepend (int data){
Node
newHead = new Node(data);
newHead.next
= head;
head
= newHead;
}
public
void deleteWithValue(int data){
if(head
== null ) return;
if(head.data
== data) {
head
= head.next;
return;
}
while
(current.next != null)
{
if
(current.next.data == data){
current.next
= current.next.next;
return;
}
}
}
}
public
static void main(String args[]){
LinkedList
list = new LinkedList();
list.append(20);
list.append(30);
System.out.println(list);
list.prepend(100);
System.out.println(list);
list.deleteWithValue(20);
System.out.println(list);
}
