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.

If your company is working with a large list in an Excel spreadsheet, take advantage of the program's built-in filter customization tools to limit the number of rows included in your filter results.

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