public FCNode(CoordNode baseCordNode, int dimension, int index,
bool promoted = false, int previousAugmentedListIndex = -1)
{
BaseCoordNode = baseCordNode;
Index = index;
Dimension = dimension;
Promoted = promoted;
PreviousAugmentedListIndex = previousAugmentedListIndex;
}
private void SetFCTransformationMatrix(int unitFracDen, bool print = false)
{
/**
* Copy coordNode matrix into FCNode matrix, perform fractional cascading
* transformation
*
* Parameter:
* unitFracDen: denominator of the unit fraction indicating the size of the
* subset of promoted list (d-1)' into list d' */
NodeMatrixPrime = new FCNode[k][];
// Convert coordNodes -> FCNodes
if (print)
{
Console.WriteLine(
"Instantiating (not-yet-promoted) FCNodes from coordNode data.");
}
for (int i = 0; i < k; i++)
{
NodeMatrixPrime[i] = new FCNode[n];
for (int j = 0; j < n; j++)
{
CoordNode thisCoordNode = InputCoordMatrix[i][j];
FCNode thisFCNode = new FCNode(thisCoordNode, (i + 1), j);
NodeMatrixPrime[i][j] = thisFCNode;
}
}
// Begin Fractional Cascading Transformation
if (print)
{
Console.WriteLine(
"Performing Fractional Cascading transformation on FCNode matrix.");
}
// Perform transformation on all lists in reverse order
// Re. i = (k-2): as nodes are always promoted from higher dimensions into
// lower ones, for (highest dim) k, list(k) = list(k')
for (int i = k - 2; i >= 0; i--)
{
NodeMatrixPrime[i] = BuildListPrime(NodeMatrixPrime[i],
NodeMatrixPrime[i + 1],
unitFracDen);
}
}
public FCNode(CoordNode baseCoordNode, bool prime = false)
{
BaseCoordNode = baseCoordNode;
Prime = prime;
}
public static CoordNode[] GetCoordNodeList(int n, int insertData = -1,
bool sort = true, int sortAttrCode = 0,
int dimensions = 1, int randomSeed = -1,
int dataRangeMin = 0,
int dataRangeMax = 10000000,
int locRangeMin = 0,
int locRangeMax = 10000000,
bool randomizeOrder = true)
{
/**
* Return a list of coordNodes with random x, y, and z values ranging locRangeMin
* to locRangeMax and data values ranging from dataRangeMin to dataRangeMax
* (inclusive min, exclusive max).
*
* Parameters:
* n: the length of the list of nodes to return
* sort: if true, sort return list ordered by coordNode.getAttr(sortAttrCode)
* dimensions: between one and three
* dataRangeMin, dataRangeMax: randomized range of node data values
* locRangeMin, locRangeMax: randomized range of xyz values
* randomSeed: random seed used dataList generation, system default if -1
* insertData: if not -1, replace the data attribute of the node at a
* random index in the return list */
CoordNode[] nodeList = new CoordNode[n];
// Populate location and data values
int[] xList; HashSet <int> xSet;
int[] yList = new int[0]; HashSet <int> ySet = new HashSet <int> {
0
};
int[] zList = new int[0]; HashSet <int> zSet = new HashSet <int> {
0
};
(int[] dataList, HashSet <int> dataSet) = // We will always need data
RandUniqueInts(n, locRangeMin, dataRangeMax, randomSeed, randomizeOrder);
// We will always have at least one dimension
(xList, xSet) = RandUniqueInts(n, locRangeMin, locRangeMax, randomSeed,
randomizeOrder);
// Check for further dimensionality before constructing random lists
if (dimensions >= 2)
{
(int[] yL, HashSet <int> yS) = RandUniqueInts(n, locRangeMin, locRangeMax,
randomSeed, randomizeOrder);
yList = yL; ySet = yS;
}
if (dimensions == 3)
{
(int[] zL, HashSet <int> zS) = RandUniqueInts(n, locRangeMin, locRangeMax,
randomSeed, randomizeOrder);
zList = zL; zSet = zS;
}
if (dimensions > 3 || dimensions < 1)
{
string errMsg =
"Invalid dimensions parameter value when calling getCoordNodeList";
throw new Exception(errMsg);
}
for (int i = 0; i < n; i++) // Build nodes using newly generated lists/sets
{
if (dimensions == 1)
{
nodeList[i] = new CoordNode(dataList[i], xList[i]);
}
else if (dimensions == 2)
{
nodeList[i] = new CoordNode(dataList[i], xList[i], yList[i]);
}
else if (dimensions == 3)
{
nodeList[i] =
new CoordNode(dataList[i], xList[i], yList[i], zList[i]);
}
}
// Insert expected search value
if (insertData >= 0) // note: n/2 index in nodeList is arbitrary
{
if (!(dataSet.Contains(insertData)))
{
nodeList[n / 2].SetData(insertData);
}
}
// Sort randomly generated attributes on sortAttrCode
if (sort)
{
new MergeSortNodes().Sort(nodeList, sortAttrCode);
}
return(nodeList);
}
