private void rb_permutation_CheckedChanged(object sender, EventArgs e)
{
if (rb_permutation.Checked && !(counter is Permutation))
{
counter = new Permutation();
}
}
private void rb_combinations_CheckedChanged(object sender, EventArgs e)
{
if (rb_combinations.Checked && !(counter is Combination))
{
counter = new Combination();
}
}
public Form1()
{
InitializeComponent();
counter = new Permutation();
}