random_grouping

Utility for random grouping.

The author of this crate is not good at English.
Forgive me if the document is hard to read.

What is this?

This is useful for grouping multiple items into some groups at random.

Examples

let mut rg = RandomGrouping::new();
let samples = (0..10).collect::<Vec<_>>();
let ratios = [0.3, 0.3, 0.2];

let result = rg.divide_by_ratio(&samples, &ratios);

assert!(result.len() == ratios.len());
for i in 0..result.len() {
    let group_size = (ratios[i] * samples.len() as f64).floor() as usize;
    assert!(result[i].len() == group_size);
    assert!(result[i].iter().all(|x| samples.contains(x)));
}

Versions

See CHANGELOG.