Function malachite_base::vecs::random_vec_permutations

pub fn random_vec_permutations<T: Clone>(
    seed: Seed,
    xs: Vec<T>
) -> RandomVecPermutations<T> 

Uniformly generates a random Vec of values cloned from an original Vec.

The permutations are Vecs of cloned items. It may be more convenient for the iterator to return references to a slice, in which case you may use random_slice_permutations instead.

The output length is infinite.

$P(p) = 1/n!$, where $n$ is xs.len().

Examples

use itertools::Itertools;
use malachite_base::random::EXAMPLE_SEED;
use malachite_base::vecs::random_vec_permutations;

let css: Vec<String> = random_vec_permutations(EXAMPLE_SEED, vec!['a', 'b', 'c', 'd'])
    .take(20)
    .map(|ds| ds.into_iter().collect())
    .collect();
assert_eq!(
    css.iter().map(String::as_str).collect_vec().as_slice(),
    [
        "cadb", "cbad", "cadb", "badc", "acdb", "cbad", "dabc", "dbca", "cdba", "cdab", "bacd",
        "cabd", "adbc", "cdab", "dcab", "abcd", "abcd", "dacb", "bcad", "adcb"
    ]
);