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<a href="#pub-methods">Public Member Functions</a> |
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<a href="#pri-attribs">Private Attributes</a> |
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<a href="../../d9/db3/classdata__structure_1_1_skip_list-members.html">List of all members</a> </div>
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<div class="headertitle">
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<div class="title">data_structure::SkipList Class Reference</div> </div>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
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Public Member Functions</h2></td></tr>
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<tr class="memitem:aed414cf88cfacb9554ecfd184b03fe04"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d1/d46/classdata__structure_1_1_skip_list.html#aed414cf88cfacb9554ecfd184b03fe04">SkipList</a> ()</td></tr>
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<tr class="memitem:a10800369c9efa08dd86de0ce552c874e"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d1/d46/classdata__structure_1_1_skip_list.html#a10800369c9efa08dd86de0ce552c874e">randomLevel</a> ()</td></tr>
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<tr class="memitem:a1c6c04c0fb45ea2e2378de7ab9cb465b"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d1/d46/classdata__structure_1_1_skip_list.html#a1c6c04c0fb45ea2e2378de7ab9cb465b">insertElement</a> (int key, void *value)</td></tr>
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<tr class="memitem:a4b8eb18c9ca24f53e9de91b74febd666"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d1/d46/classdata__structure_1_1_skip_list.html#a4b8eb18c9ca24f53e9de91b74febd666">deleteElement</a> (int key)</td></tr>
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<tr class="memitem:a7cda6370f8bd2b6d1db28bd5ca586a21"><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d1/d46/classdata__structure_1_1_skip_list.html#a7cda6370f8bd2b6d1db28bd5ca586a21">searchElement</a> (int key)</td></tr>
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<tr class="memitem:a1574d62ca0a5a821601d246c07215335"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d1/d46/classdata__structure_1_1_skip_list.html#a1574d62ca0a5a821601d246c07215335">displayList</a> ()</td></tr>
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<tr class="separator:a1574d62ca0a5a821601d246c07215335"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pri-attribs"></a>
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Private Attributes</h2></td></tr>
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<tr class="memitem:ae0c022174510fd9ca1b84d8e996cd1a5"><td class="memItemLeft" align="right" valign="top"><a id="ae0c022174510fd9ca1b84d8e996cd1a5"></a>
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int </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d1/d46/classdata__structure_1_1_skip_list.html#ae0c022174510fd9ca1b84d8e996cd1a5">level</a></td></tr>
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<tr class="memdesc:ae0c022174510fd9ca1b84d8e996cd1a5"><td class="mdescLeft"> </td><td class="mdescRight">Maximum level of the skiplist. <br /></td></tr>
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<tr class="separator:ae0c022174510fd9ca1b84d8e996cd1a5"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a7aed753e3b47953229f5ac94f0fc9aad"><td class="memItemLeft" align="right" valign="top"><a id="a7aed753e3b47953229f5ac94f0fc9aad"></a>
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<a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr</a>< <a class="el" href="../../d3/d6f/structdata__structure_1_1_node.html">Node</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d1/d46/classdata__structure_1_1_skip_list.html#a7aed753e3b47953229f5ac94f0fc9aad">header</a></td></tr>
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<tr class="memdesc:a7aed753e3b47953229f5ac94f0fc9aad"><td class="mdescLeft"> </td><td class="mdescRight">Pointer to the header node. <br /></td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><p><a class="el" href="../../d1/d46/classdata__structure_1_1_skip_list.html">SkipList</a> class implementation with basic methods </p>
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</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<a id="aed414cf88cfacb9554ecfd184b03fe04"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#aed414cf88cfacb9554ecfd184b03fe04">◆ </a></span>SkipList()</h2>
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<div class="memitem">
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<td class="memname">data_structure::SkipList::SkipList </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td></td>
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<p>Skip List constructor. Initializes header, start <a class="el" href="../../d3/d6f/structdata__structure_1_1_node.html">Node</a> for searching in the list </p>
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<div class="fragment"><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  {</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#ae0c022174510fd9ca1b84d8e996cd1a5">level</a> = 0;</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">// Header initialization</span></div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#a7aed753e3b47953229f5ac94f0fc9aad">header</a> = <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr<Node></a>(<span class="keyword">new</span> <a class="code" href="../../db/d8b/struct_node.html">Node</a>(-1, <a class="code" href="../../d1/db4/namespacedata__structure.html#a039855c4d1684de1fec104057df9f26d">MAX_LEVEL</a>));</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  }</div>
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<h2 class="groupheader">Member Function Documentation</h2>
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<a id="a4b8eb18c9ca24f53e9de91b74febd666"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a4b8eb18c9ca24f53e9de91b74febd666">◆ </a></span>deleteElement()</h2>
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<td class="memname">void data_structure::SkipList::deleteElement </td>
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<td>(</td>
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<td class="paramtype">int </td>
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<p>Deletes an element by key and prints if has been removed successfully </p><dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">key</td><td>is number that is used for comparision. </td></tr>
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<div class="fragment"><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  {</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr<Node></a> x = <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#a7aed753e3b47953229f5ac94f0fc9aad">header</a>;</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  </div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array<std::shared_ptr<Node></a>, <a class="code" href="../../d1/db4/namespacedata__structure.html#a039855c4d1684de1fec104057df9f26d">MAX_LEVEL</a> + 1> update;</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  update.fill(<span class="keyword">nullptr</span>);</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  </div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#ae0c022174510fd9ca1b84d8e996cd1a5">level</a>; i >= 0; i--) {</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">while</span> (x->forward[i] != <span class="keyword">nullptr</span> && x->forward[i]->key < key)</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  x = x->forward[i];</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  update[i] = x;</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  }</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  </div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  x = x->forward[0];</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  </div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordtype">bool</span> doesnt_exist = (x == <span class="keyword">nullptr</span> || x->key != key);</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  </div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">if</span> (!doesnt_exist) {</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i <= <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#ae0c022174510fd9ca1b84d8e996cd1a5">level</a>; i++) {</div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordflow">if</span> (update[i]->forward[i] != x)</div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  update[i]->forward[i] = x->forward[i];</div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  }</div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="comment">/* Remove empty levels*/</span></div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">while</span> (<a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#ae0c022174510fd9ca1b84d8e996cd1a5">level</a> > 0 && <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#a7aed753e3b47953229f5ac94f0fc9aad">header</a>->forward[<a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#ae0c022174510fd9ca1b84d8e996cd1a5">level</a>] == <span class="keyword">nullptr</span>) <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#ae0c022174510fd9ca1b84d8e996cd1a5">level</a>--;</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Deleted"</span> << <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Doesn't exist"</span> << <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  }</div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  }</div>
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<h2 class="memtitle"><span class="permalink"><a href="#a1574d62ca0a5a821601d246c07215335">◆ </a></span>displayList()</h2>
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<td class="memname">void data_structure::SkipList::displayList </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<p>Display skip list level </p>
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<div class="fragment"><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  {</div>
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<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Displaying list:\n"</span>;</div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i <= <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#ae0c022174510fd9ca1b84d8e996cd1a5">level</a>; i++) {</div>
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr<Node></a> <a class="code" href="../../d5/da1/structnode.html">node</a> = <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#a7aed753e3b47953229f5ac94f0fc9aad">header</a>->forward[i];</div>
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Level "</span> << (i) << <span class="stringliteral">": "</span>;</div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">while</span> (<a class="code" href="../../d5/da1/structnode.html">node</a> != <span class="keyword">nullptr</span>) {</div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <a class="code" href="../../d5/da1/structnode.html">node</a>->key << <span class="stringliteral">" "</span>;</div>
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <a class="code" href="../../d5/da1/structnode.html">node</a> = <a class="code" href="../../d5/da1/structnode.html">node</a>->forward[i];</div>
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  }</div>
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<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
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<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  }</div>
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<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  }</div>
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Here is the call graph for this function:</div>
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<h2 class="memtitle"><span class="permalink"><a href="#a1c6c04c0fb45ea2e2378de7ab9cb465b">◆ </a></span>insertElement()</h2>
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<td class="memname">void data_structure::SkipList::insertElement </td>
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<td>(</td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>key</em>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">void * </td>
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<td class="paramname"><em>value</em> </td>
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<td>)</td>
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<p>Inserts elements with given key and value; It's level is computed by <a class="el" href="../../d1/d46/classdata__structure_1_1_skip_list.html#a10800369c9efa08dd86de0ce552c874e">randomLevel()</a> function. </p><dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">key</td><td>is number that is used for comparision </td></tr>
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<tr><td class="paramname">value</td><td>pointer to a value, that can be any type </td></tr>
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<div class="fragment"><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  {</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Inserting"</span> << key << <span class="stringliteral">"..."</span>;</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr<Node></a> x = <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#a7aed753e3b47953229f5ac94f0fc9aad">header</a>;</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array<std::shared_ptr<Node></a>, <a class="code" href="../../d1/db4/namespacedata__structure.html#a039855c4d1684de1fec104057df9f26d">MAX_LEVEL</a> + 1> update;</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  update.fill(<span class="keyword">nullptr</span>);</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  </div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#ae0c022174510fd9ca1b84d8e996cd1a5">level</a>; i >= 0; i--) {</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">while</span> (x->forward[i] != <span class="keyword">nullptr</span> && x->forward[i]->key < key)</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  x = x->forward[i];</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  update[i] = x;</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  }</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  </div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  x = x->forward[0];</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  </div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordtype">bool</span> doesnt_exist = (x == <span class="keyword">nullptr</span> || x->key != key);</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">if</span> (doesnt_exist) {</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordtype">int</span> rlevel = <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#a10800369c9efa08dd86de0ce552c874e">randomLevel</a>();</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  </div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">if</span> (rlevel > <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#ae0c022174510fd9ca1b84d8e996cd1a5">level</a>) {</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#ae0c022174510fd9ca1b84d8e996cd1a5">level</a> + 1; i < rlevel + 1; i++) update[i] = <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#a7aed753e3b47953229f5ac94f0fc9aad">header</a>;</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  </div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="comment">// Update current level</span></div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#ae0c022174510fd9ca1b84d8e996cd1a5">level</a> = rlevel;</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  }</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  </div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr<Node></a> n =</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr<Node></a>(<span class="keyword">new</span> <a class="code" href="../../db/d8b/struct_node.html">Node</a>(key, rlevel, value));</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i <= rlevel; i++) {</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  n->forward[i] = update[i]->forward[i];</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  update[i]->forward[i] = n;</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  }</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Inserted"</span> << <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  </div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Exists"</span> << <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  }</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  }</div>
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<h2 class="memtitle"><span class="permalink"><a href="#a10800369c9efa08dd86de0ce552c874e">◆ </a></span>randomLevel()</h2>
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<td class="memname">int data_structure::SkipList::randomLevel </td>
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<td>(</td>
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<p>Returns random level of the skip list. Every higher level is 2 times less likely. </p><dl class="section return"><dt>Returns</dt><dd>random level for skip list </dd></dl>
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<div class="fragment"><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  {</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordtype">int</span> lvl = 0;</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">while</span> (<span class="keyword">static_cast<</span><span class="keywordtype">float</span><span class="keyword">></span>(<a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/random/rand.html">std::rand</a>()) / RAND_MAX < <a class="code" href="../../d1/db4/namespacedata__structure.html#a38234f668624bca86341240f34a95193">PROBABILITY</a> &&</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  lvl < <a class="code" href="../../d1/db4/namespacedata__structure.html#a039855c4d1684de1fec104057df9f26d">MAX_LEVEL</a>)</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  lvl++;</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> lvl;</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  }</div>
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<h2 class="memtitle"><span class="permalink"><a href="#a7cda6370f8bd2b6d1db28bd5ca586a21">◆ </a></span>searchElement()</h2>
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<td class="memname">void* data_structure::SkipList::searchElement </td>
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<p>Searching element in skip list structure </p><dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">key</td><td>is number that is used for comparision </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>pointer to the value of the node </dd></dl>
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<div class="fragment"><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  {</div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr<Node></a> x = <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#a7aed753e3b47953229f5ac94f0fc9aad">header</a>;</div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Searching for "</span> << key << <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  </div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = <a class="code" href="../../d1/d46/classdata__structure_1_1_skip_list.html#ae0c022174510fd9ca1b84d8e996cd1a5">level</a>; i >= 0; i--) {</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">while</span> (x->forward[i] && x->forward[i]->key < key) x = x->forward[i];</div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  }</div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  </div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  x = x->forward[0];</div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">if</span> (x && x->key == key) {</div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Found"</span> << <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordflow">return</span> x->value;</div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Not Found"</span> << <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  }</div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  }</div>
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<hr/>The documentation for this class was generated from the following file:<ul>
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<li>data_structures/<a class="el" href="../../d0/d5a/skip__list_8cpp.html">skip_list.cpp</a></li>
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<div class="ttc" id="anamespacedata__structure_html_a38234f668624bca86341240f34a95193"><div class="ttname"><a href="../../d1/db4/namespacedata__structure.html#a38234f668624bca86341240f34a95193">data_structure::PROBABILITY</a></div><div class="ttdeci">constexpr float PROBABILITY</div><div class="ttdoc">Current probability for "coin toss".</div><div class="ttdef"><b>Definition:</b> skip_list.cpp:28</div></div>
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<div class="ttc" id="ashared_ptr_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr</a></div><div class="ttdoc">STL class.</div></div>
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<div class="ttc" id="aclassdata__structure_1_1_skip_list_html_ae0c022174510fd9ca1b84d8e996cd1a5"><div class="ttname"><a href="../../d1/d46/classdata__structure_1_1_skip_list.html#ae0c022174510fd9ca1b84d8e996cd1a5">data_structure::SkipList::level</a></div><div class="ttdeci">int level</div><div class="ttdoc">Maximum level of the skiplist.</div><div class="ttdef"><b>Definition:</b> skip_list.cpp:56</div></div>
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<div class="ttc" id="astructnode_html"><div class="ttname"><a href="../../d5/da1/structnode.html">node</a></div><div class="ttdef"><b>Definition:</b> avltree.cpp:13</div></div>
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<div class="ttc" id="astruct_node_html"><div class="ttname"><a href="../../db/d8b/struct_node.html">Node</a></div><div class="ttdef"><b>Definition:</b> linkedlist_implentation_usingarray.cpp:14</div></div>
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<div class="ttc" id="abasic_ostream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a></div></div>
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<div class="ttc" id="aarray_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/array.html">std::array</a></div><div class="ttdoc">STL class.</div></div>
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<div class="ttc" id="aclassdata__structure_1_1_skip_list_html_a10800369c9efa08dd86de0ce552c874e"><div class="ttname"><a href="../../d1/d46/classdata__structure_1_1_skip_list.html#a10800369c9efa08dd86de0ce552c874e">data_structure::SkipList::randomLevel</a></div><div class="ttdeci">int randomLevel()</div><div class="ttdef"><b>Definition:</b> skip_list.cpp:75</div></div>
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<div class="ttc" id="arand_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/numeric/random/rand.html">std::rand</a></div><div class="ttdeci">T rand(T... args)</div></div>
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<div class="ttc" id="aendl_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a></div><div class="ttdeci">T endl(T... args)</div></div>
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<div class="ttc" id="aclassdata__structure_1_1_skip_list_html_a7aed753e3b47953229f5ac94f0fc9aad"><div class="ttname"><a href="../../d1/d46/classdata__structure_1_1_skip_list.html#a7aed753e3b47953229f5ac94f0fc9aad">data_structure::SkipList::header</a></div><div class="ttdeci">std::shared_ptr< Node > header</div><div class="ttdoc">Pointer to the header node.</div><div class="ttdef"><b>Definition:</b> skip_list.cpp:57</div></div>
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<div class="ttc" id="anamespacedata__structure_html_a039855c4d1684de1fec104057df9f26d"><div class="ttname"><a href="../../d1/db4/namespacedata__structure.html#a039855c4d1684de1fec104057df9f26d">data_structure::MAX_LEVEL</a></div><div class="ttdeci">constexpr int MAX_LEVEL</div><div class="ttdoc">Maximum level of skip list.</div><div class="ttdef"><b>Definition:</b> skip_list.cpp:27</div></div>
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