public void TestAppendToNullList()
{
///test appends to null list
int testNum = 33;
LiList testList = new LiList();
testList.Append(testNum);
int expectedValue = 33;
Assert.Equal(expectedValue, testList.Head.Value);
}
public void TestAppendDoesNotChangeHead()
{
///test append does not insert the new appended node at the head
int testNum1 = 3;
int testNum2 = 13;
int testNum3 = 23;
LiList testList = new LiList();
testList.Insert(testNum1);
testList.Insert(testNum2);
testList.Append(testNum3);
int expectedNalue = 13;
Assert.Equal(expectedNalue, testList.Head.Value);
}
public void TestAppendToEnd()
{
///test appends method at to end node head
int testNum1 = 7;
int testNum2 = 17;
int testNum3 = 77;
LiList testList = new LiList();
testList.Insert(testNum1);
testList.Insert(testNum2);
testList.Append(testNum3);
int expectedValue = 77;
Assert.Equal(expectedValue, testList.Head.Next.Next.Value);
}
/// <summary>
/// Zip two linked lists together
/// </summary>
/// <param name="lOne">list one</param>
/// <param name="lTwo">list two</param>
/// <returns>zipped list</returns>
public static LiList Merge(LiList lOne, LiList lTwo)
{
lOne.Current = lOne.Head;
int counterOne = 0;
int counterTwo = 0;
while (lOne.Current.Next != null) /// interrate through linked list to get count, start at one in order to equate for positioning
{
lOne.Current = lOne.Current.Next;
counterOne++;
}
lTwo.Current = lTwo.Head;
while (lTwo.Current.Next != null) /// interrate through linked list to get count, start at one in order to equate for positioning
{
lTwo.Current = lTwo.Current.Next;
counterTwo++;
}
int newCount = counterOne + counterTwo; /// length of both lists for new list
Node C1 = lOne.Head; ///reference holder 1
Node C2 = lTwo.Head; /// reference holder 2
while (newCount > 1)
{
if (lTwo.Current != null)
{
lOne.InsertAfter(C1.Value, C2.Value);
C1 = C1.Next.Next;
C2 = C2.Next;
lOne.Print();
}
else
{
lOne.Append(C2.Value);
C2 = C2.Next;
lOne.Print();
}
newCount--;
}
return(lOne);
}