The solution lies with using Excel's array feature to traverse a data list automatically and extract missing sequential numbers, even if the number list is out of order.

To extract and sort non-adjacent arrays in your data, nest the CHOOSECOLS or CHOOSEROWS functions inside your SORT or SORTBY ...

Want to delete or truncate numbers to the left in Excel? Learning how to remove numbers in Excel from the left is a neat trick to automate subtracting unwanted digits.

However, Excel's random number functions are volatile, meaning they change constantly. In this article, I'll show you how to generate and fix random numbers and remove duplicates.