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MinHeap

Struct MinHeap 

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pub struct MinHeap<T>(/* private fields */);
Expand description

最小値を優先して取り出すヒープです。

push と pop は O(log N)、peek は O(1) です。

§Examples

use atcoder::data_structure::heap::MinHeap;

let mut heap = MinHeap::new();
heap.push(3);
heap.push(1);
assert_eq!(heap.pop(), Some(1));

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impl<T: Ord> MinHeap<T>

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pub fn new() -> Self

空の最小ヒープを作ります。計算量は O(1) です。

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pub fn push(&mut self, item: T)

要素を追加します。計算量は O(log N) です。

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pub fn pop(&mut self) -> Option<T>

最小要素を削除して返します。空なら None です。計算量は O(log N) です。

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pub fn peek(&self) -> Option<&T>

最小要素への参照を返します。空なら None です。計算量は O(1) です。

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pub fn len(&self) -> usize

要素数を返します。計算量は O(1) です。

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pub fn is_empty(&self) -> bool

空なら true を返します。計算量は O(1) です。

Trait Implementations§

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impl<T: Clone> Clone for MinHeap<T>

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fn clone(&self) -> MinHeap<T>

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl<T: Debug> Debug for MinHeap<T>

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

Formats the value using the given formatter. Read more
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impl<T: Ord> Default for MinHeap<T>

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl<T> Freeze for MinHeap<T>

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impl<T> RefUnwindSafe for MinHeap<T>
where T: RefUnwindSafe,

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impl<T> Send for MinHeap<T>
where T: Send,

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impl<T> Sync for MinHeap<T>
where T: Sync,

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impl<T> Unpin for MinHeap<T>
where T: Unpin,

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impl<T> UnsafeUnpin for MinHeap<T>

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impl<T> UnwindSafe for MinHeap<T>
where T: UnwindSafe,

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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> CloneToUninit for T
where T: Clone,

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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
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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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. 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.