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copied!<p>The searching you are trying to do now really becomes "heavy duty" - it's no longer a single word. I recommend you use grep., rather than making your own code. I am going to assume you can do this on a linux (Mac OS) type machine ... not too familiar with Windows, sorry.</p> <p>The basic approach is this: Your grid of 10x10 can be turned into a total of 40 strings (10 each horizontal and vertical) x 2 [ because you can read backwards ]. Put those 40 strings, one line at a time, into a file we call <code>file.txt</code></p> <p>Now comes the magic. There is a very fast version of grep that looks for an "exact match" of the key, using the <code>-F</code> option. Assume your "valid words" are in a second file named <code>valid.txt</code>. From the directory where both these files are located, execute the following command:</p> <pre><code>grep -oF valid.txt file.txt > words.txt </code></pre> <p>Here is the explanation: </p> <pre><code>-o : output the matched string, not the line found -F : do not do pattern matching; look for an exact match (much, much faster - not available in all versions of grep. If you don't have it, use -f instead) valid.txt : file with the 'keys' (good words) file.txt : file to be searched for the keys > : send the output of the command... words.txt : ... to this file </code></pre> <p>You could call this command from inside your java program (see for example <a href="http://javaevangelist.blogspot.com/2008/08/making-system-call-in-java.html" rel="nofollow">this link</a>), and read the file back in. It will save you some programming, and it will quite likely be much faster than anything you can code yourself.</p>

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