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Dsu

aoc_core::graph

Struct Dsu 

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pub struct Dsu { /* private fields */ }
Expand description

Disjoint-set union-find data structure.

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impl Dsu

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pub fn new(n: usize) -> Self

Creates a new DSU with n singleton components.

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pub fn parent(&self) -> &[usize]

Parent point for each element.

A root element is its own parent.

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pub fn size(&self) -> &[usize]

Size of each component (valid only for roots).

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pub const fn components(&self) -> usize

Current number of disjoint components.

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

Returns the root of the component containing x.

Applies path compression, making future queries faster.

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

Unites the components containing x and y, merging the smaller component into the bigger one.

Returns true if a merge occurred, or false if they were already in the same component.

Auto Trait Implementations§

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impl Freeze for Dsu

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impl RefUnwindSafe for Dsu

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impl Send for Dsu

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impl Sync for Dsu

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impl Unpin for Dsu

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impl UnsafeUnpin for Dsu

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impl UnwindSafe for Dsu

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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.