private static void DoWordLookup()
{
var wordTree = new WordTree();
Console.WriteLine("Step 1: populate word lookup. End each word with new line, empty line finishes step 1");
while (true)
{
string input = Console.ReadLine();
if (string.IsNullOrEmpty(input))
{
break;
}
wordTree.StoreWord(input);
}
while (true)
{
Console.WriteLine("Select mode (1 - propose next letter, 2 - validate word, 3 - return to main menu): ");
var key = Console.ReadKey(true);
switch (key.KeyChar)
{
case '1':
NextLetter(wordTree);
break;
case '2':
ValidateWord(wordTree);
break;
case '3':
return;
}
}
}
private static void NextLetter(WordTree tree)
{
Console.WriteLine("Enter one of the available letters below, new line returns to main menu");
var current = tree.Root;
string currentString = string.Empty;
while (true)
{
var options = string.Join(",", current.NextLetters.Select(x => x.Key));
if (string.IsNullOrEmpty(options))
{
Console.WriteLine("No more options available");
break;
}
Console.WriteLine("{0} [{1}]", currentString, options);
var key = Char.ToUpper(Console.ReadKey(true).KeyChar);
if (key == 13)
{
break;
}
if (current.NextLetters.ContainsKey(key))
{
currentString += key;
current = current.NextLetters[key];
}
}
}
private static void ValidateWord(WordTree tree)
{
Console.WriteLine("Enter word to validate, empty line returns to main menu");
while (true)
{
string input = Console.ReadLine();
if (string.IsNullOrEmpty(input))
{
break;
}
bool result = tree.IsValidWord(input);
Console.WriteLine("Word '{0}' is {1}found in dictionary", input, result ? string.Empty : "not ");
}
}