Struct WeightedUnionFind

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pub struct WeightedUnionFind<G: Abel> { /* private fields */ }
Expand description

重み付きUnionFind

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impl<G: Abel> WeightedUnionFind<G>
where G::Val: Eq,

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pub fn new(n: usize) -> Self

UnionFindを構築

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pub fn get_root(&mut self, x: usize) -> usize

根を求める

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pub fn weight(&mut self, x: usize) -> G::Val

重みを求める

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pub fn is_same(&mut self, x: usize, y: usize) -> bool

同一の集合に所属するか判定

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pub fn diff(&mut self, x: usize, y: usize) -> Option<G::Val>

重みの差を求める

同じグループにいない場合にはNoneを返す

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pub fn unite( &mut self, x: usize, y: usize, weight: G::Val, ) -> Result<bool, &str>

集合x,yself.diff(x, y) = weightとなるように併合する.

戻り値

  • すでにx,yが併合済みだった場合
    • self.diff(x, y) == weight の場合 → Some(false)
    • self.diff(x, y) != weight の場合 → Err(())
  • x,yが併合済みでない場合 → Ok(true)
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pub fn get_size(&mut self, x: usize) -> usize

xが属する集合の大きさを求める

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pub fn group_count(&self) -> usize

全体の要素数を求める

Auto Trait Implementations§

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impl<G> Freeze for WeightedUnionFind<G>

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impl<G> RefUnwindSafe for WeightedUnionFind<G>
where <G as Monoid>::Val: RefUnwindSafe,

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impl<G> Send for WeightedUnionFind<G>
where <G as Monoid>::Val: Send,

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impl<G> Sync for WeightedUnionFind<G>
where <G as Monoid>::Val: Sync,

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impl<G> Unpin for WeightedUnionFind<G>
where <G as Monoid>::Val: Unpin,

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impl<G> UnwindSafe for WeightedUnionFind<G>
where <G as Monoid>::Val: UnwindSafe,

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V