Struct FactorialTable

Source
pub struct FactorialTable<Modulo: FF> { /* private fields */ }
Expand description

有限体上での階乗の計算を行う構造体。

Implementations§

Source§

impl<Modulo: FF> FactorialTable<Modulo>
where Modulo::Element: FFElem + Copy,

Source

pub fn new(n: usize, modulo: Modulo) -> Self

Time complexity $O(n)$

Space complexity $O(n)$

Source

pub fn facto(&self, n: usize) -> Modulo::Element

nの階乗

Time complexity $O(1)$

Source

pub fn inv_facto(&self, n: usize) -> Modulo::Element

nの階乗の逆元

Time complexity $O(1)$

Source

pub fn perm(&self, n: usize, k: usize) -> Modulo::Element

n個からk個とりだす順列の個数 (${}_n \mathrm{ P }_k$)

Time complexity $O(1)$

Source

pub fn comb(&self, n: usize, k: usize) -> Modulo::Element

n個からk個とりだす組み合わせの個数 (${}_n \mathrm{ C }_k$)

Time complexity $O(1)$

Source

pub fn h(&self, n: usize, k: usize) -> Modulo::Element

n個から重複を許してk個選ぶ場合の数 (${}_n \mathrm{ H }_k$)

Time complexity $O(1)$

Trait Implementations§

Source§

impl<Modulo: FF> BellNumber for FactorialTable<Modulo>
where Modulo::Element: FFElem + Copy,

Source§

type Output = <Modulo as FF>::Element

計算結果の型
Source§

fn bell_number(&self, n: usize, k: usize) -> Self::Output

ベル数$B(n, k)$を計算する。
Source§

impl<Modulo: FF> BernoulliNumber for FactorialTable<Modulo>
where Modulo::Element: FFElem + Copy,

Source§

type Output = <Modulo as FF>::Element

計算結果の型
Source§

fn bernoulli_number(&self, n: usize) -> Vec<Self::Output>

ベルヌーイ数$B_0 \ldots B_n$を計算する。
Source§

impl<Modulo: FF> CatalanNumber for FactorialTable<Modulo>
where Modulo::Element: FFElem + Copy,

Source§

type Output = <Modulo as FF>::Element

計算結果の型
Source§

fn catalan_number(&self, n: usize) -> Self::Output

カタラン数$C_n$を計算する。
Source§

impl<Modulo: Clone + FF> Clone for FactorialTable<Modulo>
where Modulo::Element: Clone,

Source§

fn clone(&self) -> FactorialTable<Modulo>

Returns a copy of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
Source§

impl<Modulo: Debug + FF> Debug for FactorialTable<Modulo>
where Modulo::Element: Debug,

Source§

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

Formats the value using the given formatter. Read more
Source§

impl<Modulo: FF> StirlingSecond for FactorialTable<Modulo>
where Modulo::Element: FFElem + Copy,

Source§

type Output = <Modulo as FF>::Element

計算結果の型
Source§

fn stirling_second(&self, n: usize, k: usize) -> Self::Output

第二種スターリング数$S(n,k)$を計算する。

Auto Trait Implementations§

§

impl<Modulo> Freeze for FactorialTable<Modulo>
where Modulo: Freeze,

§

impl<Modulo> RefUnwindSafe for FactorialTable<Modulo>
where Modulo: RefUnwindSafe, <Modulo as FF>::Element: RefUnwindSafe,

§

impl<Modulo> Send for FactorialTable<Modulo>
where Modulo: Send, <Modulo as FF>::Element: Send,

§

impl<Modulo> Sync for FactorialTable<Modulo>
where Modulo: Sync, <Modulo as FF>::Element: Sync,

§

impl<Modulo> Unpin for FactorialTable<Modulo>
where Modulo: Unpin, <Modulo as FF>::Element: Unpin,

§

impl<Modulo> UnwindSafe for FactorialTable<Modulo>
where Modulo: UnwindSafe, <Modulo as FF>::Element: UnwindSafe,

Blanket Implementations§

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> CloneToUninit for T
where T: Clone,

Source§

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

impl<T> ToOwned for T
where T: Clone,

Source§

type Owned = T

The resulting type after obtaining ownership.
Source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
Source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.