public void InsertAtFront(int item)
{
SNode head = this.head;
SNode newNode = new SNode(item)
{
next = head
};
this.head = newNode;
}
public void InsertLast(int item)
{
SNode curr = this.head;
while (curr != null && curr.next != null)
{
curr = curr.next;
}
SNode newNode = new SNode(item);
curr.next = newNode;
}
public void InsertNext(int item)
{
SNode curr = this.head;
while (curr.next != null && curr.next.data != -1)
{
curr = curr.next;
}
SNode newNode = new SNode(item);
newNode.next = curr.next;
curr.next = newNode;
}
private SinglyLinkList ReverseLinkedList(SinglyLinkList singly)
{
log("Reversing linked list", true);
SNode curr = singly.head, prev = null, next = null;
while (curr.data != -1)
{
next = curr.next;
curr.next = prev;
prev = curr;
curr = next;
}
singly.head = prev;
return(singly);
}
public void PrintLL()
{
SNode temp = this.head;
while (temp != null)
{
if (temp.next == null)
{
Console.Write(temp.data);
}
else
{
Console.Write(temp.data + "-> ");
}
temp = temp.next;
}
}
public void PrintNode(SNode node)
{
log("Printing Node - Sum result", true);
while (node != null)
{
if (node.next == null)
{
log(node.data.ToString(), false);
}
else
{
log(node.data.ToString() + "->", false);
}
node = node.next;
}
log("", true);
log("==================", true);
}
public SNode ReverseGroupedLinkedList(SinglyLinkList singly, int m, int n)
{
SNode ll_head = singly.head, temp = singly.head, dummy_node = null, prev = null;
SNode curr = null, rprev = null, rtemp = null;
int count = 1;
log("Real List");
PrintLinkList(singly);
log("");
while (temp != null && count != m)
{
prev = temp;
temp = temp.next;
count++;
}
log("temp ==> ", false);
log(temp.data.ToString());
prev.next = dummy_node;
dummy_node = temp;
rprev = dummy_node;
curr = temp;
while (curr != null && count != n)
{
rtemp = curr.next;
curr.next = rprev;
rprev = curr;
curr = rtemp;
}
prev.next = rprev;
ll_head = prev;
return(ll_head);
}
public void PrintLinkList(SinglyLinkList singly)
{
log("printing linked list", true);
SNode temp = singly.head;
while (temp != null)
{
if (temp.next == null)
{
log(temp.data.ToString(), false);
}
else
{
log(temp.data.ToString() + "-> ", false);
}
temp = temp.next;
}
log("", true);
log("==================", true);
}
public SNode AddTwoLinkedList(SinglyLinkList singly_first, SinglyLinkList singly_second)
{
log("Adding Linked List", true);
SNode first, second, res = null, prev = null, temp = null;
int carry = 0, sum;
first = singly_first.head;
second = singly_second.head;
while (first != null || second != null)
{
int num_first = 0, num_second = 0;
if (first != null)
{
num_first = first.data;
}
if (second != null)
{
num_second = second.data;
}
sum = carry + num_first + num_second;
if (sum >= 10)
{
carry = 1;
}
else
{
carry = 0;
}
sum = sum % 10;
temp = new SNode(sum);
if (res == null)
{
res = temp;
}
else
{
prev.next = temp;
}
prev = temp;
if (first != null)
{
first = first.next;
}
if (second != null)
{
second = second.next;
}
}
if (carry > 0)
{
temp.next = new SNode(carry);
}
PrintNode(res);
return(res);
}