private List <BWTNode> BuildPathToTop(BWTNode node, List <BWTNode> currentPath)
{
currentPath.Add(node);
if (node.Parent == null)
{
return(currentPath);
}
return(BuildPathToTop(node.Parent, currentPath));
}
private void Colorize(BWTNode node)
{
if (node.LeftChild == null && node.RightChild == null)
{
return;
}
var index = GetLeftColorIndexForLevel(node.Level);
node.LeftChildColor = _colors[index];
node.LeftChild.ParentColor = _colors[index];
node.RightChildColor = _colors[index + 1];
node.RightChild.ParentColor = _colors[index + 1];
Colorize(node.LeftChild);
Colorize(node.RightChild);
}
public int QuantumModeling(int startIndex, int stopIndex)
{
BWTNode currentNode = null;
currentNode = DescendingTree.Find(x => x.Index == startIndex);
if (currentNode == null)
{
currentNode = AscendingTree.Find(x => x.Index == startIndex);
}
if (currentNode == null)
{
throw new NullReferenceException($"There is no a node with index {startIndex}");
}
var currentNodes = new List <BWTNode> {
currentNode
};
var counter = 0;
while (true)
{
counter += 1;
var newCurrentNodes = new List <BWTNode>();
foreach (var node in currentNodes)
{
var nodeDoubling1 = RandomStep(node);
if (nodeDoubling1.Index == stopIndex)
{
return(counter);
}
if (!newCurrentNodes.Contains(nodeDoubling1))
{
newCurrentNodes.Add(nodeDoubling1);
}
var nodeDoubling2 = RandomStep(node);
if (nodeDoubling2.Index == stopIndex)
{
return(counter);
}
if (!newCurrentNodes.Contains(nodeDoubling2))
{
newCurrentNodes.Add(nodeDoubling2);
}
}
currentNodes = newCurrentNodes;
}
}
private void BuildBridges(BWTNode node, List <BWTNode> ascLeafs, List <BWTNode> visited, List <BWTNode> currentPath, List <List <BWTNode> > bridges)
{
visited.Add(node);
currentPath.Add(node);
if (ascLeafs.Contains(node))
{
var currentPathClone = currentPath.Select(x => x.Clone()).ToList();
bridges.Add(currentPathClone);
}
if (!visited.Contains(node.LeftChild))
{
BuildBridges(node.LeftChild, ascLeafs, visited, currentPath, bridges);
}
if (!visited.Contains(node.RightChild))
{
BuildBridges(node.RightChild, ascLeafs, visited, currentPath, bridges);
}
}
private BWTNode RandomStep(BWTNode currentNode)
{
var direction = _rnd.Next(3);
switch (direction)
{
case 0:
var parent = currentNode.Parent;
return(parent == null ? currentNode : parent);
case 1:
return(currentNode.LeftChild);
case 2:
return(currentNode.RightChild);
default:
throw new Exception("Incorrect direction");
}
}
private BWTNode GenerateNode(int?parentIndex, BWTNode parentNode, bool isRight, int level, bool isDescending, int shift = 0, int threshold = 1)
{
if (parentIndex == null)
{
var root = new BWTNode(0, null, 0, shift, threshold);
if (isDescending)
{
DescendingTree[0] = root;
}
else
{
AscendingTree[0] = root;
}
root.ParentColor = 0;
root.LeftChild = GenerateNode(0, root, false, level + 1, isDescending, shift);
root.RightChild = GenerateNode(0, root, true, level + 1, isDescending, shift);
return(root);
}
if (level > _levels)
{
return(null);
}
var currentIndex = isRight ? 2 * (int)parentIndex + 2 : 2 * (int)parentIndex + 1;
var node = new BWTNode(currentIndex, parentNode, level, shift, threshold);
if (isDescending)
{
DescendingTree[currentIndex] = node;
}
else
{
AscendingTree[currentIndex] = node;
}
node.LeftChild = GenerateNode(currentIndex, node, false, level + 1, isDescending, shift);
node.RightChild = GenerateNode(currentIndex, node, true, level + 1, isDescending, shift);
return(node);
}
private int CountColorByGoToTheTop(BWTNode node, int color, int counter = 0)
{
if (node.Parent == null)
{
if (node.ParentColor == color)
{
return(counter + 1);
}
else
{
return(counter);
}
}
if (node.ParentColor == color)
{
return(CountColorByGoToTheTop(node.Parent, color, counter + 1));
}
else
{
return(CountColorByGoToTheTop(node.Parent, color, counter));
}
}
public int NormalModeling(int startIndex, int stopIndex)
{
BWTNode currentNode = null;
currentNode = DescendingTree.Find(x => x.Index == startIndex);
if (currentNode == null)
{
currentNode = AscendingTree.Find(x => x.Index == startIndex);
}
if (currentNode == null)
{
throw new NullReferenceException($"There is no a node with index {startIndex}");
}
var counter = 0;
do
{
currentNode = RandomStep(currentNode);
counter += 1;
}while(currentNode.Index != stopIndex);
return(counter);
}
