static void LinkedListGenerics()
{
LinkedList <string> llist = new LinkedList <string>();
var s1 = Stopwatch.StartNew();
llist.AddLast("two");
llist.AddLast("three");
llist.AddFirst("one");
llist.Remove("two");
LinkedListNode <string> node = llist.Find("three");
llist.AddBefore(node, "two");
foreach (string content in llist)
{
Console.WriteLine("value: {0}", content);
}
s1.Stop();
Console.WriteLine(s1.ElapsedMilliseconds / 1000);
}
public static void Test(LinkedList <string> sentence)
{
// Create the link list.
Display(sentence, "LinkedList: ");
Console.WriteLine("sentence.Contains(\"jumps\") = {0}",
sentence.Contains("jumps"));
// 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 to '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 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 'jumps' = {0}",
sentence.Contains("jumps"));
Console.WriteLine();
}
