//! Clears the connection matrix
public void clear()
{
for (int i = 0; i < connections.Length; i++)
{
PoslTools.fill(connections[i], 0);
}
}
//! Constructor: receives the connection matrix
/*!
* \param connection_matrix The connection matrix
*/
public ConnectionMatrix(int[][] connection_matrix)
{
int n = connection_matrix.GetLength(0);
for (int i = 0; i < n; i++)
{
if (connection_matrix[i].Length != i)
{
PoslTools.p_throw("not valid connection matrix", "ConnectionMatrix", "CONSTRUCTOR");
}
}
connections = connection_matrix;
}
//! Returns the total number of variables that index is connected with (RANKING)
/*!
* \param index A 0-based index
* \return The total number of variables that index is connected with (RANKING)
*/
public int ranking_cost_of_index(int index)
{
int sum = 0;
for (int i = 0; i < connections[index].Length; i++)
{
sum += PoslTools.identity(connections[index][i]);
}
for (int i = index + 1; i < connections.Length; i++)
{
sum += PoslTools.identity(connections[i][index]);
}
return(sum);
}
//! Returns whether indexes a and b are connected
/*!
* \param a A 1-based index
* \param b A 1-based index
* \return True if a and b are connected, false otherwise
*/
public bool are_connected(int a, int b)
{
if (!are_one_base_indexes(a, b))
{
PoslTools.p_throw("not valid indexes", "ConnectionMatrix", "are_connected");
}
if (a == b)
{
return(true);
}
int pa = Math.Max(a, b) - 1;
int pb = Math.Min(a, b) - 1;
return(connections[pa][pb] > 1);
}
//! Inserts a new connection between indexes a and b
// -- (see C++ implementation for lost details)
/*!
* \param a A 1-based index
* \param b A 1-based index
*/
public void add_connection(int a, int b)
{
if (!are_one_base_indexes(a, b))
{
PoslTools.p_throw("not valid indexes", "ConnectionMatrix", "add_connection");
}
if (a == b)
{
return;
}
int pa = Math.Max(a, b) - 1;
int pb = Math.Min(a, b) - 1;
connections[pa][pb]++;
}