Function percentile

pub fn percentile(
    values: &mut OwnedClusterList,
    target: impl OrderedListIndex,
    pivot_fn: &mut impl FnMut(&ClusterList<'_>) -> f64,
) -> MeanValue<f64>

quickselect algorithm

Consider using percentile_rand or median. See percentile_by for support for a custom comparator function.

pivot_fn must return a value from the supplied slice.