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<title data-rh="true">Použití červeno-černých stromů | mf</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://blog.mfocko.xyz/ib002/rb-trees/applications"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="current"><meta data-rh="true" name="docusaurus_tag" content="docs-ib002-current"><meta data-rh="true" name="docsearch:version" content="current"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-ib002-current"><meta data-rh="true" property="og:title" content="Použití červeno-černých stromů | mf"><meta data-rh="true" name="description" content="Ukázka použití červeno-černých stromů v standardních knižnicích známých jazyků.
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"><meta data-rh="true" property="og:description" content="Ukázka použití červeno-černých stromů v standardních knižnicích známých jazyků.
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jsme vybrali několik jazyků.</p><p>Pokud Vás zajímají různé implementace, tak bychom doporučili „prohrabávat“ se přes ně v následujícím pořadí: <code>C# → Java → C++</code>. Důvod pro zvolené pořadí vychází z toho, že C# implementace je poměrně čitelná a obsahuje množství vysvětlujících komentářů. Implementace v Javě je stejně čitelná, ačkoli již s minimem komentářů, které se maximálně odkazují na CLRS. C++ implementace je „značně poznačená“ podtržítky ;)</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="c">C++<a href="#c" class="hash-link" aria-label="Direct link to C++" title="Direct link to C++"></a></h3><p>V C++ si můžeme vybrat mezi 2 různými implementacemi (<code>clang</code> nebo <code>gcc</code>).</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="clang">clang<a href="#clang" class="hash-link" aria-label="Direct link to clang" title="Direct link to clang"></a></h4><p>Hlavičkové soubory, které používáme při práci s množinou nebo slovníkem (zajímavé sekce jsou vytaženy):</p><ul><li><p><a href="https://github.com/llvm/llvm-project/blob/main/libcxx/include/map" target="_blank" rel="noopener noreferrer"><code>map</code></a></p><div class="language-cpp codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#000000;--prism-background-color:#ffffff"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-cpp codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#000000"><span class="token keyword" style="color:rgb(0, 0, 255)">template</span><span class="token plain"> </span><span class="token operator" style="color:rgb(0, 0, 0)"><</span><span class="token keyword" style="color:rgb(0, 0, 255)">class</span><span class="token plain"> </span><span class="token class-name" style="color:rgb(38, 127, 153)">_Key</span><span class="token punctuation" style="color:rgb(4, 81, 165)">,</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(0, 0, 255)">class</span><span class="token plain"> </span><span class="token class-name" style="color:rgb(38, 127, 153)">_Tp</span><span class="token punctuation" style="color:rgb(4, 81, 165)">,</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(0, 0, 255)">class</span><span class="token plain"> </span><span class="token class-name" style="color:rgb(38, 127, 153)">_Compare</span><span class="token plain"> </span><span class="token operator" style="color:rgb(0, 0, 0)">=</span><span class="token plain"> less</span><span class="token operator" style="color:rgb(0, 0, 0)"><</span><span class="token plain">_Key</span><span class="token operator" style="color:rgb(0, 0, 0)">></span><span class="token punctuation" style="color:rgb(4, 81, 165)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#000000"><span class="token plain"> </span><span class="token keyword" style="color:rgb(0, 0, 255)">class</span><span class="token plain"> </span><span class="token class-name" style="color:rgb(38, 127, 153)">_Allocator</span><span class="token plain"> </span><span class="token operator" style="color:rgb(0, 0, 0)">=</span><span class="token plain"> allocator</span><span class="token operator" style="color:rgb(0, 0, 0)"><</span><span class="token plain">pair</span><span class="token operator" style="color:rgb(0, 0, 0)"><</span><span class="token keyword" style="color:rgb(0, 0, 255)">const</span><span class="token plain"> _Key</span><span class="token punctuation" style="color:rgb(4, 81, 165)">,</span><span class="token plain"> _Tp</span><span class="token operator" style="color:rgb(0, 0, 0)">></span><span class="token plain"> </span><span class="token operator" style="color:rgb(0, 0, 0)">></span><span class="token plain"> </span><span class="token operator" style="color:rgb(0, 0, 0)">></span><span class="token plain"></span><br></span><span class="token-line" style="color:#000000"><span class="token plain"></sp
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ještě existuje <a href="https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=libstdc%2B%2B-v3/src/c%2B%2B98/tree.cc;h=fd14991589a57c6aa847f57105a938cd2bf4df6f;hb=HEAD" target="_blank" rel="noopener noreferrer"><code>tree.cc</code></a>, kde je lze nalézt třeba funkci s následující hlavičkou:</p><div class="language-cpp codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#000000;--prism-background-color:#ffffff"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-cpp codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#000000"><span class="token keyword" style="color:rgb(0, 0, 255)">void</span><span class="token plain"></span><br></span><span class="token-line" style="color:#000000"><span class="token plain"></span><span class="token function" style="color:rgb(0, 0, 255)">_Rb_tree_insert_and_rebalance</span><span class="token punctuation" style="color:rgb(4, 81, 165)">(</span><span class="token keyword" style="color:rgb(0, 0, 255)">const</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(0, 0, 255)">bool</span><span class="token plain"> __insert_left</span><span class="token punctuation" style="color:rgb(4, 81, 165)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#000000"><span class="token plain"> _Rb_tree_node_base</span><span class="token operator" style="color:rgb(0, 0, 0)">*</span><span class="token plain"> __x</span><span class="token punctuation" style="color:rgb(4, 81, 165)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#000000"><span class="token plain"> _Rb_tree_node_base</span><span class="token operator" style="color:rgb(0, 0, 0)">*</span><span class="token plain"> __p</span><span class="token punctuation" style="color:rgb(4, 81, 165)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#000000"><span class="token plain"> _Rb_tree_node_base</span><span class="token operator" style="color:rgb(0, 0, 0)">&</span><span class="token plain"> __header</span><span class="token punctuation" style="color:rgb(4, 81, 165)">)</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(0, 0, 255)">throw</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(4, 81, 165)">(</span><span class="token punctuation" style="color:rgb(4, 81, 165)">)</span><span class="token punctuation" style="color:rgb(4, 81, 165)">;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="java">Java<a href="#java" class="hash-link" aria-label="Direct link to Java" title="Direct link to Java"></a></h3><p>V Javě jsou pro nás klíčové implementace <a href="https://github.com/openjdk/jdk/blob/master/src/java.base/share/classes/java/util/TreeSet.java" target="_blank" rel="noopener noreferrer"><code>TreeSet</code></a> a <a href="https://github.com/openjdk/jdk/blob/master/src/java.base/share/classes/java/util/TreeMap.java" target="_blank" rel="noopener noreferrer"><code>TreeMap</code></a>.</p><p>V implementaci <code>TreeSet</code> si můžete povšimnout:</p><div class="language-java codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#000000;--prism-background-color:#ffffff"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism
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