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<p class='location'>Struct UnionFind</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.new">new</a><a href="#method.find">find</a><a href="#method.find_mut">find_mut</a><a href="#method.union">union</a><a href="#method.into_labeling">into_labeling</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Debug">Debug</a><a href="#impl-Clone">Clone</a></div></div><p class='location'><a href='../index.html'>petgraph</a>::<wbr><a href='index.html'>unionfind</a></p><script>window.sidebarCurrent = {name: 'UnionFind', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<h1 class='fqn'><span class='in-band'>Struct <a href='../index.html'>petgraph</a>::<wbr><a href='index.html'>unionfind</a>::<wbr><a class="struct" href=''>UnionFind</a></span><span class='out-of-band'><span id='render-detail'>
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[<span class='inner'>−</span>]
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</span><a class='srclink' href='../../src/petgraph/unionfind.rs.html#15-27' title='goto source code'>[src]</a></span></h1>
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<pre class='rust struct'>pub struct UnionFind<K> { /* fields omitted */ }</pre><div class='docblock'><p><code>UnionFind<K></code> is a disjoint-set data structure. It tracks set membership of <em>n</em> elements
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indexed from <em>0</em> to <em>n - 1</em>. The scalar type is <code>K</code> which must be an unsigned integer type.</p>
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<p><a href="http://en.wikipedia.org/wiki/Disjoint-set_data_structure">http://en.wikipedia.org/wiki/Disjoint-set_data_structure</a></p>
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<p>Too awesome not to quote:</p>
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<p>“The amortized time per operation is <strong>O(α(n))</strong> where <strong>α(n)</strong> is the
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inverse of <strong>f(x) = A(x, x)</strong> with <strong>A</strong> being the extremely fast-growing Ackermann function.”</p>
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<h2 id='methods' class='small-section-header'>
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Methods<a href='#methods' class='anchor'></a>
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</h2>
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<h3 id='impl' class='impl'><span class='in-band'><code>impl<K> <a class="struct" href="../../petgraph/unionfind/struct.UnionFind.html" title="struct petgraph::unionfind::UnionFind">UnionFind</a><K> <span class="where fmt-newline">where<br> K: <a class="trait" href="../../petgraph/graph/trait.IndexType.html" title="trait petgraph::graph::IndexType">IndexType</a>, </span></code><a href='#impl' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/petgraph/unionfind.rs.html#36-145' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.new' class="method"><span id='new.v' class='invisible'><code>pub fn <a href='#method.new' class='fnname'>new</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> Self</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/petgraph/unionfind.rs.html#40-46' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Create a new <code>UnionFind</code> of <code>n</code> disjoint sets.</p>
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</div><h4 id='method.find' class="method"><span id='find.v' class='invisible'><code>pub fn <a href='#method.find' class='fnname'>find</a>(&self, x: K) -> K</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/petgraph/unionfind.rs.html#51-66' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Return the representative for <code>x</code>.</p>
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<p><strong>Panics</strong> if <code>x</code> is out of bounds.</p>
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</div><h4 id='method.find_mut' class="method"><span id='find_mut.v' class='invisible'><code>pub fn <a href='#method.find_mut' class='fnname'>find_mut</a>(&mut self, x: K) -> K</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/petgraph/unionfind.rs.html#74-80' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Return the representative for <code>x</code>.</p>
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<p>Write back the found representative, flattening the internal
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datastructure in the process and quicken future lookups.</p>
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<p><strong>Panics</strong> if <code>x</code> is out of bounds.</p>
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</div><h4 id='method.union' class="method"><span id='union.v' class='invisible'><code>pub fn <a href='#method.union' class='fnname'>union</a>(&mut self, x: K, y: K) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/petgraph/unionfind.rs.html#101-130' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Unify the two sets containing <code>x</code> and <code>y</code>.</p>
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<p>Return <code>false</code> if the sets were already the same, <code>true</code> if they were unified.</p>
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<p><strong>Panics</strong> if <code>x</code> or <code>y</code> is out of bounds.</p>
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</div><h4 id='method.into_labeling' class="method"><span id='into_labeling.v' class='invisible'><code>pub fn <a href='#method.into_labeling' class='fnname'>into_labeling</a>(self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><K></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/petgraph/unionfind.rs.html#133-144' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Return a vector mapping each element to its representative.</p>
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</div></div>
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<h2 id='implementations' class='small-section-header'>
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Trait Implementations<a href='#implementations' class='anchor'></a>
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<h3 id='impl-Debug' class='impl'><span class='in-band'><code>impl<K: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="../../petgraph/unionfind/struct.UnionFind.html" title="struct petgraph::unionfind::UnionFind">UnionFind</a><K></code><a href='#impl-Debug' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/petgraph/unionfind.rs.html#14' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.fmt' class="method"><span id='fmt.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&self, __arg_0: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -> <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/petgraph/unionfind.rs.html#14' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
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</div></div><h3 id='impl-Clone' class='impl'><span class='in-band'><code>impl<K: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="../../petgraph/unionfind/struct.UnionFind.html" title="struct petgraph::unionfind::UnionFind">UnionFind</a><K></code><a href='#impl-Clone' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/petgraph/unionfind.rs.html#14' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.clone' class="method"><span id='clone.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&self) -> <a class="struct" href="../../petgraph/unionfind/struct.UnionFind.html" title="struct petgraph::unionfind::UnionFind">UnionFind</a><K></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/petgraph/unionfind.rs.html#14' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Returns a copy of the value. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></p>
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</div><h4 id='method.clone_from' class="method"><span id='clone_from.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&mut self, source: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Self)</code></span><span class='out-of-band'><div class='ghost'></div><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/clone.rs.html#112-114' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from">Read more</a></p>
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