The most efficient representation of the word dictionary would be a DAWG structure.įinally: Programming game algorithms is one of the best ways to learn complex programming techniques. Further changes to this program could make the pattern of letters read in from a text file.Ĭaution: The implementation here is inefficient. The hard part is inputting the text file into the program. With this program, we search for and list all the words embedded in word search puzzles. Info: If we did not copy the covered array, the algorithm would fail because previous search paths would have covered squares. At the start of Search, we see if the current square is already covered. The array must be copied each time it is changed. This indicates what squares have been used already in the search path. Then: We check the covered array to make sure a letter has not already been used. At the start of Search, we have some bounds checking logic. This is to go in every possible direction from a single square. It can call itself eight times on each call. The Search method is a recursive method: it calls itself. Input lines of text and then a blank line. Search(array, i + 1, a - 1, width, height, pass, cov) Search(array, i - 1, a + 1, width, height, pass, cov) Search(array, i - 1, a - 1, width, height, pass, cov) Search(array, i, a - 1, width, height, pass, cov) Search(array, i - 1, a, width, height, pass, cov) Search(array, i + 1, a + 1, width, height, pass, cov) Search(array, i, a + 1, width, height, pass, cov) Search(array, i + 1, a, width, height, pass, cov) Don't deal with already covered squares. Static Dictionary _found = new Dictionary() Ĭonst int _minLength = 4 // Minimum length of matching words.Ĭonsole.WriteLine("Input lines of text and then a blank line.") Using (StreamReader reader = new StreamReader("enable1.txt")) Static Dictionary _found = new Dictionary(StringComparer.Ordinal) Ĭonst int _minLength = 3 // Minimum length of matching words. Static Dictionary _words = new Dictionary(400000, StringComparer.Ordinal) It uses several dictionary collections and populates one with data from a text file containing a list of English words.Īnd: An array is built from the input string, and then each square is searched in every direction using the word dictionary as a guide. To start, this is the complete implementation of a program that solves these puzzles. We investigate a computer program that solves this kind of puzzle, such as those given to children to keep them busy.Įnglish words are hidden in any direction inside a grid of letters.
Word search puzzles contain hidden words. This C# algorithm article demonstrates a way to search for words in a block of letters.
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