/// <summary>
/// Determine if a potential solution value is still possible
/// </summary>
/// <exception cref="ArgumentOutOfRangeException">Thrown when argument is too small or too large</exception>
/// <param name="value">Value to check</param>
public bool IsPotentialSolution(char value)
{
// Range validation
if (value < MinValue || value > MaxValue)
{
throw new ArgumentOutOfRangeException("IsPotentialSolution",
string.Format("Argument ({0:d}) must be between {1} and {2}",
value, MinValue, MaxValue));
}
// True if not yet disqualified
return(RemainingPossibilities.Contains(value));
}
/// <summary>
/// Remove a potential solution value from consideration
/// </summary>
/// <exception cref="ArgumentOutOfRangeException">Thrown when argument is too small or too large</exception>
/// <param name="value">Value to exclude from consideration</param>
public void Disqualify(char value)
{
// Range validation
if (value < MinValue || value > MaxValue)
{
throw new ArgumentOutOfRangeException("Disqualify",
string.Format("Argument ({0:d}) must be between {1} and {2}",
value, MinValue, MaxValue));
}
// Remove if value is currently qualified; ignore (benignly) if previously disqualified
if (RemainingPossibilities.Contains(value))
{
RemainingPossibilities.Remove(value);
}
}