private void PermutateWords()
{
var words = _rgxWords.Split(txtInput.Text.Trim());
var fromN = words.Length;
if (fromN > 7)
{
txtOutput.Text = "Many permutations requested - may take some time...";
txtOutput.Refresh();
}
if (fromN > 9)
{
MessageBox.Show("avoid to input more than 9 Word - Richtextbox has Trouble to display millions of results ( eg 10! = 3.628.800 )");
return;
}
var wordCounts = words.GroupBy(w => w, w => 2, (g, w) => w.Count());
var indexCounter = 0;
var indicees = wordCounts.SelectMany(cnt => Enumerable.Repeat(indexCounter++, cnt));
var distinctWords = words.Distinct().ToArray();
var sb = new StringBuilder();
var counter = 0;
foreach (var result in Combinatorics.Permutation(indicees))
{
sb.AppendLine(string.Join(" ", result.Select(i => distinctWords[i])));
counter += 1;
}
txtOutput.Text = string.Concat("Permutating the given set of word yields: ", counter, " results\n\n", sb.ToString());
}
private static void CompareChooseKfromN(int chooseK, int fromN, CombinatoricMode mode)
{
var tst1 = Combinatorics.ChooseKfromN(chooseK, fromN, mode).ToArray();
var tst2 = Combinatorics.ChooseKfromN(chooseK, fromN, mode); // enter alternative-call here
Compare(tst1, tst2);
}
private void ApplyNumeric(int chooseK, int fromN, CombinatoricMode mode)
{
var sb = new StringBuilder();
var counter = 0;
foreach (var result in Combinatorics.ChooseKfromN(chooseK, fromN, mode))
{
sb.Append(string.Concat(result)).Append(" ");
counter += 1;
}
txtOutput.Text = string.Concat(Preambel(chooseK, fromN, mode), counter, " results\n\n", sb.ToString());
}
private void Apply2Words(int chooseK, int fromN, CombinatoricMode mode)
{
//demo, how to transform the int-results to any other DataType: Just take them as Indicees of an Source-Element-Array (of any type).
var sb = new StringBuilder();
var words = _rgxWords.Split(txtInput.Text.Trim());
if (words.Length != fromN)
{
MessageBox.Show("number of words must equal the fromN-Parameter");
return;
}
var counter = 0;
foreach (var result in Combinatorics.ChooseKfromN(chooseK, fromN, mode))
{
sb.AppendLine(string.Join(" ", result.Select(i => words[i]).ToArray()));
counter += 1;
}
txtOutput.Text = string.Concat(Preambel(chooseK, fromN, mode), counter, " results\n\n", sb.ToString());
}
private static void ComparePermutations(IEnumerable <int> ints)// enter alternative-call here
{
Compare(Combinatorics.Permutation(ints.ToArray()), Combinatorics.Permutation(ints.ToArray()));
}