public bool MoveNext()
{
if (myPersonLinkedList == null) {
myPersonLinkedList = new LinkedList<Person>();
myPersonLinkedList.AddLast(new Person{Id=1,Name="John",Location="hyd"});
myPersonLinkedList.AddLast(new Person{Id=2,Name="Daniel",Location="Delhi"});
myPersonLinkedList.AddLast(new Person{Id=3,Name="Popeye",Location="mumbai"});
myPersonLinkedList.AddLast(new Person{Id=4,Name="Tom",Location="pune"});
}
if (currentObj == null && myPersonLinkedList.First != null) {
currentObj = myPersonLinkedList.First;
return true;
}
if ( currentObj.Next!=null) {
currentObj = currentObj.Next;
return true;
} else {
return false;
}
}
public void Reset()
{
currentObj = null;
}
public void Clear()
{
firstElement = null;
lastElement = null;
Count = 0;
}
static void Main(string[] args)
{
// Create the link list.
string[] words =
{ "the", "fox", "jumped", "over", "the", "dog" };
LinkedList <string> sentence = new LinkedList <string>(words);
Display(sentence, "The linked list values:");
Console.WriteLine("sentence.Contains(\"jumped\") = {0}",
sentence.Contains("jumped"));
// Add the word 'today' to the beginning of the linked list.
sentence.AddFirst("today");
Display(sentence, "Test 1: Add 'today' to beginning of the list:");
// Move the first node to be the last node.
LinkedListNode <string> mark1 = sentence.First;
sentence.RemoveFirst();
sentence.AddLast(mark1);
Display(sentence, "Test 2: Move first node to be last node:");
// Change the last node be 'yesterday'.
sentence.RemoveLast();
sentence.AddLast("yesterday");
Display(sentence, "Test 3: Change the last node to 'yesterday':");
// Move the last node to be the first node.
mark1 = sentence.Last;
sentence.RemoveLast();
sentence.AddFirst(mark1);
Display(sentence, "Test 4: Move last node to be first node:");
// Indicate, by using parentheisis, the last occurence of 'the'.
sentence.RemoveFirst();
LinkedListNode <string> current = sentence.FindLast("the");
IndicateNode(current, "Test 5: Indicate last occurence of 'the':");
// Add 'lazy' and 'old' after 'the' (the LinkedListNode named current).
sentence.AddAfter(current, "old");
sentence.AddAfter(current, "lazy");
IndicateNode(current, "Test 6: Add 'lazy' and 'old' after 'the':");
// Indicate 'fox' node.
current = sentence.Find("fox");
IndicateNode(current, "Test 7: Indicate the 'fox' node:");
// Add 'quick' and 'brown' before 'fox':
sentence.AddBefore(current, "quick");
sentence.AddBefore(current, "brown");
IndicateNode(current, "Test 8: Add 'quick' and 'brown' before 'fox':");
// Keep a reference to the current node, 'fox',
// and to the previous node in the list. Indicate the 'dog' node.
mark1 = current;
LinkedListNode <string> mark2 = current.Previous;
current = sentence.Find("dog");
IndicateNode(current, "Test 9: Indicate the 'dog' node:");
// The AddBefore method throws an InvalidOperationException
// if you try to add a node that already belongs to a list.
Console.WriteLine("Test 10: Throw exception by adding node (fox) already in the list:");
try
{
sentence.AddBefore(current, mark1);
}
catch (InvalidOperationException ex)
{
Console.WriteLine("Exception message: {0}", ex.Message);
}
Console.WriteLine();
// Remove the node referred to by mark1, and then add it
// before the node referred to by current.
// Indicate the node referred to by current.
sentence.Remove(mark1);
sentence.AddBefore(current, mark1);
IndicateNode(current, "Test 11: Move a referenced node (fox) before the current node (dog):");
// Remove the node referred to by current.
sentence.Remove(current);
IndicateNode(current, "Test 12: Remove current node (dog) and attempt to indicate it:");
// Add the node after the node referred to by mark2.
sentence.AddAfter(mark2, current);
IndicateNode(current, "Test 13: Add node removed in test 11 after a referenced node (brown):");
// The Remove method finds and removes the
// first node that that has the specified value.
sentence.Remove("old");
Display(sentence, "Test 14: Remove node that has the value 'old':");
// When the linked list is cast to ICollection(Of String),
// the Add method adds a node to the end of the list.
sentence.RemoveLast();
ICollection <string> icoll = sentence;
icoll.Add("rhinoceros");
Display(sentence, "Test 15: Remove last node, cast to ICollection, and add 'rhinoceros':");
Console.WriteLine("Test 16: Copy the list to an array:");
// Create an array with the same number of
// elements as the inked list.
string[] sArray = new string[sentence.Count];
sentence.CopyTo(sArray, 0);
foreach (string s in sArray)
{
Console.WriteLine(s);
}
// Release all the nodes.
sentence.Clear();
Console.WriteLine();
Console.WriteLine("Test 17: Clear linked list. Contains 'jumped' = {0}",
sentence.Contains("jumped"));
Console.ReadLine();
}
static void Main(string[] args)
{
LinkedList<int> intlinked = new LinkedList<int>();
LinkedList<int> addlist = new LinkedList<int>();
List<int> mylist = new List<int>();
List<int> addList = new List<int>();
for (int J = 0; J < 5; J++)
{
mylist.Add(J);
}
IEnumerator<int> Listenumerator = mylist.GetEnumerator();
Console.WriteLine("list is ------------------");
while (Listenumerator.MoveNext())
{
Console.WriteLine(Listenumerator.Current);
}
for (int K = 15; K < 20; K ++)
{
addList.Add(K);
}
IEnumerator<int> AddListenumerator = addList.GetEnumerator();
Console.WriteLine("add list is ------------------");
while (AddListenumerator.MoveNext())
{
Console.WriteLine(AddListenumerator.Current);
}
Console.WriteLine("after add is -------------");
IEnumerable<int> AddListIEnumerable = addList.AsEnumerable();
mylist.AddRange(AddListIEnumerable);
IEnumerator<int> FinalList = mylist.GetEnumerator();
while (FinalList.MoveNext())
{
Console.WriteLine(FinalList.Current);
}
Console.WriteLine("Linked List -------------");
for (int i = 195; i < 200; i++)
{
addlist.AddFirst(i);
}
for (int i = 0; i < 10; i++)
{
intlinked.AddFirst(i);
}
IEnumerator<int> enumerator = intlinked.GetEnumerator();
while (enumerator.MoveNext()) {
Console.WriteLine(enumerator.Current);
}
Console.WriteLine();
LinkedListNode<int> listNode = intlinked.Find(5);
Console.WriteLine(listNode.Value);
IEnumerator<int> addenumerator = addlist.GetEnumerator();
while (addenumerator.MoveNext()) {
Console.WriteLine(addenumerator.Current);
intlinked.AddAfter(listNode, addenumerator.Current);
}
Console.WriteLine("----------------------after insert new list in");
IEnumerator<int> Newenumerator = intlinked.GetEnumerator();
while (Newenumerator.MoveNext())
{
Console.WriteLine(Newenumerator.Current);
}
}
