Paste anything containing numbers (a spreadsheet column, a comma list, a whole paragraph) and get them back in order, with duplicates optionally dropped.
Most sorting tools need clean input: one value per line, nothing else. This one scans the text for anything that looks like a number and ignores everything around it. That means you can paste a spreadsheet column, a comma-separated row, a sentence with figures in it, or a log line with timestamps and values mixed together, and get back just the numbers in order. Decimals and negative signs are recognised as part of the number rather than as separators, so -3.5 is read as a single value rather than as 3 and 5.
How you want the result depends on where it is going. One per line suits a spreadsheet paste, where each value needs its own cell. Comma-separated is right for putting the list back into code or a config value. Space-separated is compact and readable when you are just eyeballing a range. Removing duplicates before sorting turns a raw column into a distinct set, which is a fast way to answer questions like how many different values a field actually holds, usually far fewer than the number of rows.
No. Numbers are extracted from anywhere in the text, so a paragraph, a comma list or a spreadsheet column all work without reformatting first.
Yes. A leading minus and a decimal point are read as part of the number, so -3.5 sorts as a single value below zero rather than as two figures.
It is discarded. The output is the numbers alone, which is the point, if you need the surrounding text kept, sort by lines instead.