haar_lib::ds::sparse_table

Struct SparseTable

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pub struct SparseTable<A: Semigroup + Idempotence> { /* private fields */ }
Expand description

冪等性と結合性をもつ列の区間取得($O(1)$)ができる。

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impl<A: Semigroup + Idempotence + Clone + Default> SparseTable<A>

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pub fn new(s: Vec<A>) -> Self

Time complexity $O(n \log n)$

Space complexity $O(n \log n)$

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pub fn fold(&self, range: impl RangeBounds<usize>) -> Option<A>

Time complexity $O(1)$

Auto Trait Implementations§

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impl<A> Freeze for SparseTable<A>

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impl<A> RefUnwindSafe for SparseTable<A>
where A: RefUnwindSafe,

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impl<A> Send for SparseTable<A>
where A: Send,

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impl<A> Sync for SparseTable<A>
where A: Sync,

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impl<A> Unpin for SparseTable<A>
where A: Unpin,

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impl<A> UnwindSafe for SparseTable<A>
where A: 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, 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.