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Random org list randomizer

A Random.org list randomizer shuffles the lines you paste and returns them in a new order. Each item appears once. It is a permutation of your list, not a new list of numbers.

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How it works

You paste one item per line, submit, and read the shuffled stack. Names, chores, songs, and heat-lane assignments are all the same job: the set stays the same, the order changes. RANDOM.ORG draws on atmospheric noise rather than a programming-language rand. That is why groups use it when they want an outside shuffle they can all look at. The list tool is that shuffle applied to your lines.

People type random org list randomizer, random.org list, and list randomizer org for the same form. The domain is random.org. A sibling tool, the sequence generator, shuffles a range of integers. Use the sequence when the items are already numbers in a span. Use the list when the items are names or phrases. Encoding people as 1 through n, shuffling the integers, then decoding, is extra work that invites an off-by-one. Paste the names.

Independent integer draws can repeat. A list shuffle must not, if it is a shuffle. If a name appears twice in the output, it appeared twice in the input, or the page you used was not a shuffle. Count the lines before and after. The counts should match. Missing a line is a paste error, not a mysterious property of noise.

How to run a shuffle people will accept

Publish the input list in the same breath as the output. A shuffled result with a hidden source list is a magic trick. If a name was never in the paste, it cannot lose fairly. If a name was in the paste twice, it can win twice. Clean the list first: one line per person, no blank lines you did not mean, no header row unless you want the header in the draw.

Paste the items, one per line, and count them. Remove blanks and duplicates you did not intend. Shuffle once. Save the page output, not your memory of it. Show the input count and the output count together.

Do not reshuffle because you disliked the first order, unless the group agreed to a redraw rule in advance. A redraw after seeing the result is a new experiment. It is allowed only when the rules said so before the first click. Otherwise you are hunting a favorite. The noise stream does not care, and the people on the list will.

What this form is not

It is not a lottery regulator by itself. It is not your language’s Math.random. It is not a way to add items that were not in the paste. It is not a ranking of quality: first in the shuffled list is first in a permutation, not best. If you needed a winner and two runners-up, say that you will read the top three lines of one shuffle. Do not shuffle three times and pick a favorite from each.

A list randomizer can shuffle names. It cannot shuffle a rule you refused to write down. For a classroom or a raffle among friends, the public list form is the usual path. For a contest that must be audited later, use the level of documented drawing the site actually offers, and keep the records it tells you to keep. Scraping the form in a tight loop is how hosts get blocked. A handful of shuffles in a browser is the ordinary case.

Questions and answers

Does a Random.org list shuffle allow repeats?
Not as a shuffle. Each input line appears once in the output, in a new order. Duplicates mean the input had duplicates.
Should I shuffle numbers instead of names?
Only if the items really are a numeric range. If they are people, paste the names into the list form.
Can we click again if we dislike the order?
Only if the group agreed to a redraw rule before the first result. Otherwise the first shuffle is the draw.

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