Function polars_arrow::kernels::sort_partition::partition_to_groups_amortized

pub fn partition_to_groups_amortized<T>(
    values: &[T],
    first_group_offset: IdxSize,
    nulls_first: bool,
    offset: IdxSize,
    out: &mut Vec<[IdxSize; 2]>
)where
    T: Debug + NativeType + PartialOrd,