public static Node GetIntersection(Node list1, Node list2)
{
if (list1 == null || list2 == null)
{
return(null);
}
int length1 = LinkedListHelper.GetLinkedListLength(list1);
int length2 = LinkedListHelper.GetLinkedListLength(list2);
Node iterator1 = length1 <= length2 ? list1 : list2;
Node iterator2 = length1 <= length2 ? list2 : list1;
Node result = null;
Node iterator3 = result;
while (iterator1 != null)
{
iterator2 = list2;
while (iterator2 != null)
{
if (iterator1.Value == iterator2.Value)
{
if (iterator3 == null)
{
iterator3 = new Node(iterator1.Value);
result = iterator3;
}
else
{
iterator3.Next = new Node(iterator1.Value);
iterator3 = iterator3.Next;
}
iterator2 = iterator2.Next;
list1 = iterator1;
list2 = iterator2;
break;
}
else
{
if (result != null)
{
return(result);
}
}
iterator2 = iterator2.Next;
}
iterator1 = iterator1.Next;
}
return(result);
}
public static void RemoveDuplicateWithBuffer(ref Node list)
{
int count = 0;
List <int> intList = new List <int>();
Node iterator = list;
while (iterator != null)
{
if (intList.Contains(iterator.Value))
{
LinkedListHelper.DeleteNodeAtIndex(ref list, count);
}
else
{
intList.Add(iterator.Value);
count++;
}
iterator = iterator.Next;
}
}
public static Node Addition2_v2(Node h1, Node h2)
{
int val1 = 0, val2 = 0;
int idx = LinkedListHelper.GetLinkedListLength(h1) - 1;
while (h1 != null)
{
val1 += h1.Value * (int)Math.Pow(10, idx);
idx--;
}
idx = LinkedListHelper.GetLinkedListLength(h2) - 1;
while (h2 != null)
{
val2 += h2.Value * (int)Math.Pow(10, idx);
idx--;
}
string result = (val1 + val2).ToString();
Node headRes = null;
Node iterator = headRes;
for (int i = 0; i < result.Length; i++)
{
if (headRes == null)
{
headRes = new Node(result[i]);
}
else
{
iterator.Next = new Node(result[i]);
iterator = iterator.Next;
}
}
return(headRes);
}
public static bool IsPalindrome_v1(Node head)
{
if (head == null || head.Next == null)
{
return(false);
}
Node iterator = head;
int linkedListLength = LinkedListHelper.GetLinkedListLength(head);
//Stack<int> intStack = new Stack<int>();
int[] intStack = new int[linkedListLength / 2];
int count = 0, i = -1;
bool paired = linkedListLength % 2 == 0;
if (paired)
{
while (iterator != null)
{
if (count >= linkedListLength / 2)
{
if (intStack[i] != iterator.Value)
{
return(false);
}
i--;
}
else
{
intStack[count] = iterator.Value;
count++;
i++;
}
iterator = iterator.Next;
}
return(true);
}
else
{
bool first = true;
while (iterator != null)
{
if (count >= linkedListLength / 2)
{
if (first)
{
first = false;
}
else
{
if (intStack[i] != iterator.Value)
{
return(false);
}
i--;
}
}
else
{
intStack[count] = iterator.Value;
count++;
i++;
}
iterator = iterator.Next;
}
return(true);
}
}