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InPlace_Reverse_LinkedList.java
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InPlace_Reverse_LinkedList.java
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import java.util.Scanner;
public class InPlace_Reverse_LinkedList
{
static class Node
{
char data;
Node next;
Node(char val)
{
data = val;
next = null;
}
}
static Node add(char data)
{
Node newnode = new Node(data);
newnode.data = data;
newnode.next = null;
return newnode;
}
static Node addCharacters(String name, Node head,int len)
{
head = add(name.charAt(0));
Node curr = head;
for (int index=1;index<len;index++)
{
curr.next=add(name.charAt(index));
curr=curr.next;
}
return head;
}
static void print(Node head)
{
Node curr = head;
while (curr != null)
{
System.out.print(curr.data);
System.out.print("->");
curr = curr.next;
}
}
static Node printReverse(Node head)
{
Node prev = null;
Node current = head;
Node next = null;
while (current != null)
{
next = current.next;
current.next = prev;
prev = current;
current = next;
}
head= prev;
return head;
}
public static void main(String args[])
{
Scanner sc=new Scanner(System.in);
String name=sc.next();
int len=name.length();
Node head = null;
head = addCharacters(name,head,len);
System.out.println("Normal Output: ");
print(head);
System.out.print("\n\n");
System.out.println("Reversed Output: ");
head=printReverse(head);
print(head);
sc.close();
}
}