How to Shuffle Lines and Randomize a List Fairly

Duck Cloud's Shuffle Lines randomizes line order using secure browser randomness.

Study questions

Shuffling can help prevent memorization based only on sequence.

Keep question-answer pairs together before shuffling.

Test data

Randomized fixture order can reveal code that accidentally depends on a fixed sequence.

Shuffle vs sample

Shuffling returns all items in a new order. Sampling selects only some items.

Reproducibility

Secure random shuffling is not designed to reproduce the same sequence.

For automated tests that must replay exactly, use a seeded random generator in your test framework.

Fairness

Do not use a general text shuffler for regulated lotteries, gambling, legal selection, or audited prize drawings.

Those scenarios require specialized procedures and auditability.

Duplicates

Shuffling preserves duplicate lines. Use Remove Duplicate Lines first only when duplicates are accidental.

Blank rows

Use Remove Empty Lines if blank rows have no meaning.

Randomization is easy; deciding whether you need unpredictability, repeatability, or audited fairness is the important part.