private static void Compute()
{
var size = 200;
var quickFind = new QuickFindUf(size);
var quickUnion = new QuickUnionUf(size);
var weightedQuickUnion = new WeightedQuickUnionUf(size);
var connections = ErdosRenyi.Generate(size);
var quickFindResult = new int[size];
var quickUnionResult = new int[size];
var weightedQuickUnionResult = new int[size];
int p, q;
for (var i = 0; i < size; i++)
{
p = connections[i].P;
q = connections[i].Q;
quickFind.Union(p, q);
quickUnion.Union(p, q);
weightedQuickUnion.Union(p, q);
quickFindResult[i] = quickFind.ArrayVisitCount;
quickUnionResult[i] = quickUnion.ArrayVisitCount;
weightedQuickUnionResult[i] = weightedQuickUnion.ArrayParentVisitCount + weightedQuickUnion.ArraySizeVisitCount;
quickFind.ResetArrayCount();
quickUnion.ResetArrayCount();
weightedQuickUnion.ResetArrayCount();
}
Draw(quickFindResult, "Quick-Find");
Draw(quickUnionResult, "Quick-Union");
Draw(weightedQuickUnionResult, "Weighted Quick-Union");
}
public void Open(int row, int col)
{
Validate(row, col);
if (IsOpen(row, col))
{
return;
}
var index = FindIndex(row, col);
_grid[row - 1, col - 1] = true;
_openSites++;
if (row == 1)
{
_wquGrid.Union(_virtualTop, index);
_wquGridFull.Union(_virtualTop, index);
}
else if (row == _gridSize)
{
_wquGrid.Union(_virtualBottom, index);
}
// Check up site
if (IsInGrid(row - 1, col) && IsOpen(row - 1, col))
{
_wquGrid.Union(index, index - _gridSize);
_wquGridFull.Union(index, index - _gridSize);
}
// Check down site
if (IsInGrid(row + 1, col) && IsOpen(row + 1, col))
{
_wquGrid.Union(index, index + _gridSize);
_wquGridFull.Union(index, index + _gridSize);
}
// Check left site
if (IsInGrid(row, col - 1) && IsOpen(row, col - 1))
{
_wquGrid.Union(index, index - 1);
_wquGridFull.Union(index, index - 1);
}
// Check right site
if (IsInGrid(row, col + 1) && IsOpen(row, col + 1))
{
_wquGrid.Union(index, index + 1);
_wquGridFull.Union(index, index + 1);
}
}