Struct bio::data_structures::rank_select::RankSelect

pub struct RankSelect { /* private fields */ }

A rank/select data structure.

Implementations

impl RankSelect

pub fn new(bits: BitVec<u8>, k: usize) -> RankSelect

Create a new instance.

Arguments

• bits - A bit vector.
• k - Determines the size (k * 32 bits) of the superblocks. A small k means faster rank query times at the expense of using more space and slower select query times. The data structure needs O(n + n log n / (k * 32)) bits with n being the bits of the given bitvector. The data structure is succinct if k is chosen as a sublinear function of n (e.g. k = (log n)² / 32).

pub fn k(&self) -> usize

Return the used k (see RankSelect::new()).

pub fn bits(&self) -> &BitVec<u8>

Get internal representation of bit vector.

pub fn get(&self, i: u64) -> bool

Return i-th bit.

pub fn rank_1(&self, i: u64) -> Option<u64>

Get the 1-rank of a given bit, i.e. the number of 1-bits in the bitvector up to i (inclusive). Complexity: O(k).

Arguments

• i - Position of the bit to determine the rank for.

pub fn rank_0(&self, i: u64) -> Option<u64>

Get the 0-rank of a given bit, i.e. the number of 0-bits in the bitvector up to i (inclusive). Complexity: O(k).

Arguments

• i - Position of the bit to determine the rank for.

pub fn rank(&self, i: u64) -> Option<u64>

Alias for RankSelect::rank_1.

pub fn select_1(&self, j: u64) -> Option<u64>

Get the smallest bit with a given 1-rank. Complexity: O(log (n / k) + k).

Arguments

• j - The rank to find the smallest bit for.

pub fn select_0(&self, j: u64) -> Option<u64>

Get the smallest bit with a given 0-rank. Complexity: O(log (n / k) + k).

Arguments

• j - The rank to find the smallest bit for.

pub fn select(&self, j: u64) -> Option<u64>

Alias for RankSelect::select_1.

Trait Implementations

impl Clone for RankSelect

fn clone(&self) -> RankSelect

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RankSelect

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for RankSelect

fn default() -> RankSelect

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for RankSelect

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
    __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for RankSelect

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where
    H: Hasher,
    Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for RankSelect

fn cmp(&self, other: &RankSelect) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<RankSelect> for RankSelect

fn eq(&self, other: &RankSelect) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd<RankSelect> for RankSelect

fn partial_cmp(&self, other: &RankSelect) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for RankSelect

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>where
    __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for RankSelect

impl StructuralEq for RankSelect

impl StructuralPartialEq for RankSelect