pub struct UnionFind {
    parent: Vec<usize>,
    rank: Vec<usize>,
}
Expand description

The Union-Find structure is used to efficiently manage and merge disjoint sets. This module provides an implementation of the Union-Find (disjoint set) data structure.

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§parent: Vec<usize>

The parent array, where parent[i] points to the parent of node i. If parent[i] == i, then i is a root.

§rank: Vec<usize>

The rank array, used to keep the tree flat by storing the depth of the tree for each node.

Implementations§

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impl UnionFind

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pub fn new(n: usize) -> Self

Creates a new Union-Find data structure with n elements, each initially in its own set.

§Arguments
  • n - The number of elements in the Union-Find data structure.
§Example
let uf = UnionFind::new(10);
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pub fn find(&mut self, x: usize) -> usize

Finds the representative (root) of the set containing x using path compression.

§Arguments
  • x - The element for which to find the set representative.
§Returns

The representative of the set containing x.

§Example
let root = uf.find(3);
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pub fn union(&mut self, x: usize, y: usize)

Unites the sets containing x and y. Uses union by rank to keep the tree flat.

§Arguments
  • x - An element in the first set.
  • y - An element in the second set.
§Example
uf.union(3, 4);
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pub fn same_set(&mut self, x: usize, y: usize) -> bool

Checks if x and y are in the same set.

§Arguments
  • x - An element in the first set.
  • y - An element in the second set.
§Returns

true if x and y are in the same set, false otherwise.

§Example
let same = uf.same_set(3, 4);

Trait Implementations§

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impl HasPyGilRef for UnionFind

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type AsRefTarget = PyCell<UnionFind>

Utility type to make Py::as_ref work.
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impl IntoPy<Py<PyAny>> for UnionFind

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fn into_py(self, py: Python<'_>) -> PyObject

Performs the conversion.
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impl PyClass for UnionFind

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type Frozen = False

Whether the pyclass is frozen. Read more
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impl PyClassImpl for UnionFind

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const IS_BASETYPE: bool = false

#[pyclass(subclass)]
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const IS_SUBCLASS: bool = false

#[pyclass(extends=…)]
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const IS_MAPPING: bool = false

#[pyclass(mapping)]
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const IS_SEQUENCE: bool = false

#[pyclass(sequence)]
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type BaseType = PyAny

Base class
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type ThreadChecker = SendablePyClass<UnionFind>

This handles following two situations: Read more
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type PyClassMutability = <<PyAny as PyClassBaseType>::PyClassMutability as PyClassMutability>::MutableChild

Immutable or mutable
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type Dict = PyClassDummySlot

Specify this class has #[pyclass(dict)] or not.
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type WeakRef = PyClassDummySlot

Specify this class has #[pyclass(weakref)] or not.
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type BaseNativeType = PyAny

The closest native ancestor. This is PyAny by default, and when you declare #[pyclass(extends=PyDict)], it’s PyDict.
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fn items_iter() -> PyClassItemsIter

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fn doc(py: Python<'_>) -> PyResult<&'static CStr>

Rendered class doc
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fn lazy_type_object() -> &'static LazyTypeObject<Self>

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fn dict_offset() -> Option<isize>

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fn weaklist_offset() -> Option<isize>

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impl PyClassNewTextSignature<UnionFind> for PyClassImplCollector<UnionFind>

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fn new_text_signature(self) -> Option<&'static str>

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impl<'a, 'py> PyFunctionArgument<'a, 'py> for &'a UnionFind

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type Holder = Option<PyRef<'py, UnionFind>>

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fn extract( obj: &'a Bound<'py, PyAny>, holder: &'a mut Self::Holder ) -> PyResult<Self>

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impl<'a, 'py> PyFunctionArgument<'a, 'py> for &'a mut UnionFind

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type Holder = Option<PyRefMut<'py, UnionFind>>

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fn extract( obj: &'a Bound<'py, PyAny>, holder: &'a mut Self::Holder ) -> PyResult<Self>

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impl PyMethods<UnionFind> for PyClassImplCollector<UnionFind>

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fn py_methods(self) -> &'static PyClassItems

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impl PyTypeInfo for UnionFind

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const NAME: &'static str = "UnionFind"

Class name.
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const MODULE: Option<&'static str> = ::core::option::Option::None

Module name, if any.
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fn type_object_raw(py: Python<'_>) -> *mut PyTypeObject

Returns the PyTypeObject instance for this type.
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fn type_object(py: Python<'_>) -> &PyType

👎Deprecated since 0.21.0: PyTypeInfo::type_object will be replaced by PyTypeInfo::type_object_bound in a future PyO3 version
Returns the safe abstraction over the type object.
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fn type_object_bound(py: Python<'_>) -> Bound<'_, PyType>

Returns the safe abstraction over the type object.
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fn is_type_of(object: &PyAny) -> bool

👎Deprecated since 0.21.0: PyTypeInfo::is_type_of will be replaced by PyTypeInfo::is_type_of_bound in a future PyO3 version
Checks if object is an instance of this type or a subclass of this type.
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fn is_type_of_bound(object: &Bound<'_, PyAny>) -> bool

Checks if object is an instance of this type or a subclass of this type.
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fn is_exact_type_of(object: &PyAny) -> bool

👎Deprecated since 0.21.0: PyTypeInfo::is_exact_type_of will be replaced by PyTypeInfo::is_exact_type_of_bound in a future PyO3 version
Checks if object is an instance of this type.
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fn is_exact_type_of_bound(object: &Bound<'_, PyAny>) -> bool

Checks if object is an instance of this type.
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impl DerefToPyAny for UnionFind

Auto Trait 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> PyErrArguments for T
where T: IntoPy<Py<PyAny>> + Send + Sync,

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fn arguments(self, py: Python<'_>) -> Py<PyAny>

Arguments for exception
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impl<T> PyTypeCheck for T
where T: PyTypeInfo,

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const NAME: &'static str = <T as PyTypeInfo>::NAME

Name of self. This is used in error messages, for example.
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fn type_check(object: &Bound<'_, PyAny>) -> bool

Checks if object is an instance of Self, which may include a subtype. 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

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