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<!DOCTYPE html>
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<html>
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<title>Class SortedDictionary<K, V>
| Advanced Algorithms </title>
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| Advanced Algorithms ">
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<article class="content wrap" id="_content" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2">
<h1 id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2" class="text-break">Class SortedDictionary<K, V>
</h1>
<div class="markdown level0 summary"><p>A sorted Dictionary implementation using balanced binary search tree. IEnumerable will enumerate in sorted order.
This may be better than regular Dictionary implementation which can give o(K) in worst case (but O(1) amortized when collisions K is avoided).</p>
</div>
<div class="markdown level0 conceptual"></div>
<div class="inheritance">
<h5>Inheritance</h5>
<div class="level0"><a class="xref" href="https://docs.microsoft.com/dotnet/api/system.object">Object</a></div>
<div class="level1"><span class="xref">SortedDictionary<K, V></span></div>
</div>
<h6><strong>Namespace</strong>: <a class="xref" href="Advanced.Algorithms.DataStructures.Foundation.html">Advanced.Algorithms.DataStructures.Foundation</a></h6>
<h6><strong>Assembly</strong>: Advanced.Algorithms.dll</h6>
<h5 id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_syntax">Syntax</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public class SortedDictionary<K, V> : IEnumerable<KeyValuePair<K, V>> where K : IComparable</code></pre>
</div>
<h5 class="typeParameters">Type Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="parametername">K</span></td>
<td><p>The key datatype.</p>
</td>
</tr>
<tr>
<td><span class="parametername">V</span></td>
<td><p>The value datatype.</p>
</td>
</tr>
</tbody>
</table>
<h3 id="constructors">Constructors
</h3>
<a id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2__ctor_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.#ctor*"></a>
<h4 id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2__ctor" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.#ctor">SortedDictionary()</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public SortedDictionary()</code></pre>
</div>
<a id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2__ctor_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.#ctor*"></a>
<h4 id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2__ctor_IEnumerable_KeyValuePair__0__1___" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.#ctor(IEnumerable{KeyValuePair{`0,`1}})">SortedDictionary(IEnumerable<KeyValuePair<K, V>>)</h4>
<div class="markdown level1 summary"><p>Initialize the dictionary with given key value pairs sorted by key.
Time complexity: log(n).</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public SortedDictionary(IEnumerable<KeyValuePair<K, V>> sortedKeyValuePairs)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">IEnumerable</span><<span class="xref">KeyValuePair</span><K, V>></td>
<td><span class="parametername">sortedKeyValuePairs</span></td>
<td></td>
</tr>
</tbody>
</table>
<h3 id="properties">Properties
</h3>
<a id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_Count_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.Count*"></a>
<h4 id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_Count" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.Count">Count</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public int Count { get; }</code></pre>
</div>
<h5 class="propertyValue">Property Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="https://docs.microsoft.com/dotnet/api/system.int32">Int32</a></td>
<td></td>
</tr>
</tbody>
</table>
<a id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_Item_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.Item*"></a>
<h4 id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_Item__0_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.Item(`0)">Item[K]</h4>
<div class="markdown level1 summary"><p>Get/set value for given key.
Time complexity: O(log(n)).</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public V this[K key] { get; set; }</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">K</span></td>
<td><span class="parametername">key</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="propertyValue">Property Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">V</span></td>
<td></td>
</tr>
</tbody>
</table>
<h3 id="methods">Methods
</h3>
<a id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_Add_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.Add*"></a>
<h4 id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_Add__0__1_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.Add(`0,`1)">Add(K, V)</h4>
<div class="markdown level1 summary"><p>Add a new value for given key.
Time complexity: O(log(n)).</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public void Add(K key, V value)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">K</span></td>
<td><span class="parametername">key</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">V</span></td>
<td><span class="parametername">value</span></td>
<td></td>
</tr>
</tbody>
</table>
<a id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_ContainsKey_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.ContainsKey*"></a>
<h4 id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_ContainsKey__0_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.ContainsKey(`0)">ContainsKey(K)</h4>
<div class="markdown level1 summary"><p>Does this dictionary contains the given key.
Time complexity: O(log(n)).</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public bool ContainsKey(K key)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">K</span></td>
<td><span class="parametername">key</span></td>
<td><p>The key to check.</p>
</td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="https://docs.microsoft.com/dotnet/api/system.boolean">Boolean</a></td>
<td><p>True if this dictionary contains the given key.</p>
</td>
</tr>
</tbody>
</table>
<a id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_ElementAt_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.ElementAt*"></a>
<h4 id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_ElementAt_System_Int32_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.ElementAt(System.Int32)">ElementAt(Int32)</h4>
<div class="markdown level1 summary"><p>Time complexity: O(log(n))</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public KeyValuePair<K, V> ElementAt(int index)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="https://docs.microsoft.com/dotnet/api/system.int32">Int32</a></td>
<td><span class="parametername">index</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">KeyValuePair</span><K, V></td>
<td></td>
</tr>
</tbody>
</table>
<a id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_GetEnumerator_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.GetEnumerator*"></a>
<h4 id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_GetEnumerator" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.GetEnumerator">GetEnumerator()</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public IEnumerator<KeyValuePair<K, V>> GetEnumerator()</code></pre>
</div>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">IEnumerator</span><<span class="xref">KeyValuePair</span><K, V>></td>
<td></td>
</tr>
</tbody>
</table>
<a id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_IndexOf_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.IndexOf*"></a>
<h4 id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_IndexOf__0_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.IndexOf(`0)">IndexOf(K)</h4>
<div class="markdown level1 summary"><p>Time complexity: O(log(n))</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public int IndexOf(K key)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">K</span></td>
<td><span class="parametername">key</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="https://docs.microsoft.com/dotnet/api/system.int32">Int32</a></td>
<td></td>
</tr>
</tbody>
</table>
<a id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_NextHigher_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.NextHigher*"></a>
<h4 id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_NextHigher__0_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.NextHigher(`0)">NextHigher(K)</h4>
<div class="markdown level1 summary"><p>Return the next higher key-value pair after given key in this dictionary.
Time complexity: O(log(n)).</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public KeyValuePair<K, V> NextHigher(K key)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">K</span></td>
<td><span class="parametername">key</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">KeyValuePair</span><K, V></td>
<td><p>Null if the given key does'nt exist or next key does'nt exist.</p>
</td>
</tr>
</tbody>
</table>
<a id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_NextLower_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.NextLower*"></a>
<h4 id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_NextLower__0_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.NextLower(`0)">NextLower(K)</h4>
<div class="markdown level1 summary"><p>Return the next lower key-value pair before given key in this dictionary.
Time complexity: O(log(n)).</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public KeyValuePair<K, V> NextLower(K key)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">K</span></td>
<td><span class="parametername">key</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">KeyValuePair</span><K, V></td>
<td><p>Null if the given key does'nt exist or previous key does'nt exist.</p>
</td>
</tr>
</tbody>
</table>
<a id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_Remove_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.Remove*"></a>
<h4 id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_Remove__0_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.Remove(`0)">Remove(K)</h4>
<div class="markdown level1 summary"><p>Remove the given key.
Time complexity: O(log(n)).</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public bool Remove(K key)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">K</span></td>
<td><span class="parametername">key</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="https://docs.microsoft.com/dotnet/api/system.boolean">Boolean</a></td>
<td></td>
</tr>
</tbody>
</table>
<a id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_RemoveAt_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.RemoveAt*"></a>
<h4 id="Advanced_Algorithms_DataStructures_Foundation_SortedDictionary_2_RemoveAt_System_Int32_" data-uid="Advanced.Algorithms.DataStructures.Foundation.SortedDictionary`2.RemoveAt(System.Int32)">RemoveAt(Int32)</h4>
<div class="markdown level1 summary"><p>Remove the element at given index.
Time complexity: O(log(n)).</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public KeyValuePair<K, V> RemoveAt(int index)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="https://docs.microsoft.com/dotnet/api/system.int32">Int32</a></td>
<td><span class="parametername">index</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">KeyValuePair</span><K, V></td>
<td></td>
</tr>
</tbody>
</table>
</article>
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