haar_lib::tree::tree_dp

Struct TreeDP

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pub struct TreeDP<'a, T, U, E> { /* private fields */ }
Expand description

木DP

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impl<'a, T, U, E> TreeDP<'a, T, U, E>
where E: TreeEdgeTrait, T: Clone, U: Clone,

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pub fn new( init: U, up: Box<impl 'a + Fn(T, &'a E) -> U>, merge: Box<impl 'a + Fn(U, U) -> U>, apply: Box<impl 'a + Fn(U, usize) -> T>, ) -> Self

TreeDPを構築する。

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pub fn run(&self, tree: &'a Tree<E>, root: usize) -> Vec<T>

rootを根にして、tree上でDPを実行する。

Time complexity $O(n)$

Auto Trait Implementations§

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impl<'a, T, U, E> Freeze for TreeDP<'a, T, U, E>
where U: Freeze,

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impl<'a, T, U, E> !RefUnwindSafe for TreeDP<'a, T, U, E>

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impl<'a, T, U, E> !Send for TreeDP<'a, T, U, E>

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impl<'a, T, U, E> !Sync for TreeDP<'a, T, U, E>

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impl<'a, T, U, E> Unpin for TreeDP<'a, T, U, E>
where U: Unpin,

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impl<'a, T, U, E> !UnwindSafe for TreeDP<'a, T, U, E>

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

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

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fn borrow(&self) -> &T

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

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

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

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type Error = Infallible

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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.