private LlNode <int> Sum(LlNode <int> node1, LlNode <int> node2, int extra = 0)
{
var num = node1.Data + node2.Data + extra;
var carier = (num - num % 10) / 10;
var node = new LlNode <int>(num % 10);
var nextNode1 = node1.Next;
if (nextNode1 == null && node2.Next != null)
{
nextNode1 = new LlNode <int>(0);
}
var nextNode2 = node2.Next;
if (nextNode2 == null && node1.Next != null)
{
nextNode2 = new LlNode <int>(0);
}
if (nextNode1 != null && nextNode2 != null)
{
node.Next = Sum(nextNode1, nextNode2, carier);
}
else if (carier > 0)
{
node.Next = new LlNode <int>(carier);
}
return(node);
}
public void Simple()
{
var node = new LlNode <char>('a');
node.Chain('b').Chain('c').Chain('d');
Assert.That(Backward(node), Is.EqualTo("dcba"));
}
public void LongCycle()
{
var node0 = new LlNode <int>(0);
var node1 = new LlNode <int>(1);
node0.Next = node1;
node1.Next = new LlNode <int>(2).Next = new LlNode <int>(30).Next = node1;
Assert.That(CycleFinder.Find(node0), Is.True);
}
public void MovedToCarier()
{
var n1 = new LlNode <int>(5);
var n2 = new LlNode <int>(5);
var sum = Sum(n1, n2);
Assert.That(sum.Data, Is.EqualTo(0));
Assert.That(sum.Next.Data, Is.EqualTo(1));
Assert.That(sum.Next.Next, Is.Null);
}
public void NoCycle()
{
var node0 = new LlNode <int>(0);
var node1 = new LlNode <int>(1);
var node2 = new LlNode <int>(2);
var node3 = new LlNode <int>(3);
node0.Next = node1;
node1.Next = node2;
node2.Next = node3;
Assert.That(CycleFinder.Find(node0), Is.False);
}
public void Lists_Not_Equal2()
{
var n1 = new LlNode <int>(1);
n1.Chain(8);
var n2 = new LlNode <int>(0);
var sum = Sum(n2, n1);
Assert.That(sum.Data, Is.EqualTo(1));
Assert.That(sum.Next.Data, Is.EqualTo(8));
Assert.That(sum.Next.Next, Is.Null);
}
public void Simple()
{
var node1 = new LlNode <int>(2);
node1.Chain(4).Chain(3);
var node2 = new LlNode <int>(5);
node2.Chain(6).Chain(4);
var sum = Sum(node1, node2);
Assert.That(sum.Data, Is.EqualTo(7));
Assert.That(sum.Next.Data, Is.EqualTo(0));
Assert.That(sum.Next.Next.Data, Is.EqualTo(8));
Assert.That(sum.Next.Next.Next, Is.Null);
}
public void LongerCycle()
{
var node0 = new LlNode <int>(0);
var node1 = new LlNode <int>(1);
var node2 = new LlNode <int>(2);
var node3 = new LlNode <int>(3);
var node4 = new LlNode <int>(4);
var node5 = new LlNode <int>(5);
node0.Next = node1;
node1.Next = node2;
node2.Next = node3;
node3.Next = node4;
node4.Next = node5;
node5.Next = node1;
Assert.That(CycleFinder.Find(node0), Is.True);
}
private string Backward(LlNode <char> node)
{
return((node.Next == null ? "" : Backward(node.Next)) + node.Data);
}
