In My previous post the data was in a file. Now for this problem the data is in an array.

That doesn't matter. The answer to "How do I remove duplicates from a set of data?" is the same. You may have to transform your data into a form more amenable to this operation, but the techniques for removing duplicates are the same.

In reply to Re^3: remove duplicates from an array! by chromatic
in thread remove duplicates from an array! by nashkab

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