Find duplicates in a Python list The trivial way to solve this problem is to scan each element of the list against every other element in the list. This will undoubtedly return the correct answer, and ...

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.

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.