// is site (row i, column j) full?
public bool isFull(int i, int j)
{
validateIndexes(i, j);
return(percolationGrid[i - 1, j - 1] && weightedQuickUnionUFForFull.connected(getValueForQU(i, j), virtualTop));
}
// does the system percolate?
public bool percolates()
{
return(weightedQuickUnionUF.connected(virtualBottom, virtualTop));
}
