Sort and Deduplicate Lines
Clean up a list: drop repeats, sort it, strip blanks and stray whitespace. Sorting is natural, so item2 comes before item10.
0 lines
Cleaned lines appear here
Order
Common questions
Why does item10 sort after item2 here but not elsewhere?+
Sorting is natural: runs of digits compare as numbers. Plain lexicographic order compares character by character, which puts item10 before item2 because 1 precedes 2.
Does removing duplicates keep the first or the last?+
The first occurrence stays and later repeats are dropped, so the original order of what remains is preserved.