70 lines
2.3 KiB
C#
70 lines
2.3 KiB
C#
const string Url = "https://raw.githubusercontent.com/dwyl/english-words/master/words_alpha.txt";
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var letters = new Dictionary<char, int>();
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using var httpClient = new HttpClient();
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var words = new List<string>();
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if (File.Exists("words_alpha.txt"))
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{
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Console.WriteLine("Loading word list...");
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words = (await File.ReadAllLinesAsync("words_alpha.txt").ConfigureAwait(false)).ToList();
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Console.WriteLine($"Loaded {words.Count} words");
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}
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else
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{
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Console.WriteLine("Downloading word list...");
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await using Stream stream = await httpClient.GetStreamAsync(Url).ConfigureAwait(false);
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using var reader = new StreamReader(stream);
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while (!reader.EndOfStream && await reader.ReadLineAsync().ConfigureAwait(false) is { } line)
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words.Add(line);
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await File.WriteAllLinesAsync("words_alpha.txt", words).ConfigureAwait(false);
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Console.WriteLine($"Downloaded {words.Count} words");
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}
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Console.WriteLine("Removing words greater than 5 characters...");
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words.RemoveAll(word => word.Length > 5);
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Console.WriteLine($"Remaining {words.Count} words");
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Console.WriteLine("Removing words with duplicate letters...");
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words.RemoveAll(word => word.Length != new HashSet<char>(word).Count);
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Console.WriteLine($"Remaining {words.Count} words");
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Console.WriteLine("Removing anagrams...");
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words.RemoveAll(word => words.Any(other => other != word && other.Length == word.Length && IsAnagram(word, other)));
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Console.WriteLine($"Remaining {words.Count} words");
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Console.WriteLine("Searching for 5-letter words...");
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var currentSet = new Queue<string>();
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foreach (string word in words)
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{
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currentSet.Enqueue(word);
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foreach (string other in words)
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{
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currentSet.Enqueue(other);
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if (word == other)
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{
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currentSet.Dequeue();
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continue;
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}
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if (word.Any(c => other.Contains(c)))
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{
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currentSet.Dequeue();
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}
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}
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}
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return;
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bool IsAnagram(string word, string other)
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{
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letters.Clear();
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foreach (char letter in word) letters[letter] = letters.TryGetValue(letter, out int count) ? count + 1 : 1;
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foreach (char letter in other) letters[letter] = letters.TryGetValue(letter, out int count) ? count - 1 : -1;
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bool result = letters.Values.All(count => count == 0);
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return result;
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}
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