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POComparing datetimes and joining when they are within 5 minutes
 

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    <p>I have a large array of DateTimes. For example:</p> <pre><code>[2013-06-17 19:47:12, 2013-06-17 19:40:01, 2013-06-17 19:42:53, 2013-06-17 19:12:27, 2013-06-17 19:45:42, 2013-06-17 19:14:17]... etc </code></pre> <p>What I'd like to do is iterate through the array and come up with a bunch of ranges for DateTime objects that are within 5 minutes of one another.</p> <p>So, the result I would get is: </p> <pre><code>[ {range_start: 2013-06-17 19:40:01, range_end: 2013-06-17 19:47:12}, {range_start: 2013-06-17 19:12:27, range_end: 2013-06-17 19:14:17}, ] </code></pre> <p>As you can see, the first object in the result set would contain all 4 DateTime objects in the example above by getting the earliest time and latest time and making a range. Likewise for the second.</p> <p>Basically, what I'm trying to do is group together DateTimes that are within 5 minutes of each other, however I'm not sure how to do it without excessive recursion. For example, once I grab the first DateTime and I find another that is within 5 minutes of it, I then need to find all the other DateTime items that are within 5 minutes of the recently found DateTime.</p> <ol> <li>Start at minute 42</li> <li>Search 5 minutes before and after</li> <li>Find another DateTime at minute 44, so now range is 42-44</li> <li>Need to search 5 minutes before and after range of 42-44 (so anything from 38 to 49)</li> <li>If I find something at minute 49, then range goes to 42-49</li> <li>Now search radius is 38 to 54, etc...</li> </ol>
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    1. USBrian Weinreich
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