If you wish to count the same or duplicate values in a column only once in Excel or the count of occurances of duplicate values, read this article.

It’s easy to remove duplicates from a list in Java. There are a variety of functions in Java that simplify that process. Finding duplicates in a Java list? That’s actually a bit more complicated, but ...

Highlighting or even deleting duplicate records in Excel is simple but listing them isn't as easy. Fortunately, you can use Power Query to easily display a list of duplicate values or records.