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realstealthninja
2024-11-04 12:43:05 +00:00
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df/d8f/classothers_1_1_cache_1_1_l_f_u_cache.html
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@@ -1,3 +1,4 @@
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<title>Algorithms_in_C++: others::Cache::LFUCache&lt; K, V &gt; Class Template Reference</title>
<title>TheAlgorithms/C++: others::Cache::LFUCache&lt; K, V &gt; Class Template Reference</title>
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<div id="projectbrief">Set of algorithms implemented in C++.</div>
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@@ -150,7 +167,7 @@ Private Member Functions</h2></td></tr>
<tr class="memitem:adad4ab43141fb8ba43facd3a71e07047" id="r_adad4ab43141fb8ba43facd3a71e07047"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#adad4ab43141fb8ba43facd3a71e07047">push</a> (int freq, <a class="el" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html">CacheNode</a>&lt; K, V &gt; *<a class="el" href="../../d5/da1/structnode.html">node</a>)</td></tr>
<tr class="memdesc:adad4ab43141fb8ba43facd3a71e07047"><td class="mdescLeft">&#160;</td><td class="mdescRight">push the node at first position in the linked list of given frequency <br /></td></tr>
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<tr class="memitem:a16a25c102554c5653721a5112ef676c9" id="r_a16a25c102554c5653721a5112ef676c9"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a16a25c102554c5653721a5112ef676c9">increase_frequency</a> (std::pair&lt; <a class="el" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html">CacheNode</a>&lt; K, V &gt; *, int &gt; &amp;p_node)</td></tr>
<tr class="memdesc:a16a25c102554c5653721a5112ef676c9"><td class="mdescLeft">&#160;</td><td class="mdescRight">increase the frequency of node and push it in the respective list. <br /></td></tr>
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<tr class="memitem:ab3561ab204754295199f9566924f7e69" id="r_ab3561ab204754295199f9566924f7e69"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ab3561ab204754295199f9566924f7e69">pop</a> ()</td></tr>
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</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="pri-attribs" name="pri-attribs"></a>
Private Attributes</h2></td></tr>
<tr class="memitem:ac7684879e2e5da3d8bc5b1699ee42d35" id="r_ac7684879e2e5da3d8bc5b1699ee42d35"><td class="memItemLeft" align="right" valign="top"><a id="ac7684879e2e5da3d8bc5b1699ee42d35" name="ac7684879e2e5da3d8bc5b1699ee42d35"></a>
<a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/unordered_map.html">std::unordered_map</a>&lt; K, <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/utility/pair.html">std::pair</a>&lt; <a class="el" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html">CacheNode</a>&lt; K, V &gt; *, int &gt; &gt;&#160;</td><td class="memItemRight" valign="bottom"><b>node_map</b></td></tr>
<tr class="memdesc:ac7684879e2e5da3d8bc5b1699ee42d35"><td class="mdescLeft">&#160;</td><td class="mdescRight">maps the key to the node address and frequency <br /></td></tr>
<tr class="memitem:ac7684879e2e5da3d8bc5b1699ee42d35" id="r_ac7684879e2e5da3d8bc5b1699ee42d35"><td class="memItemLeft" align="right" valign="top">std::unordered_map&lt; K, std::pair&lt; <a class="el" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html">CacheNode</a>&lt; K, V &gt; *, int &gt; &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ac7684879e2e5da3d8bc5b1699ee42d35">node_map</a></td></tr>
<tr class="memdesc:ac7684879e2e5da3d8bc5b1699ee42d35"><td class="mdescLeft">&#160;</td><td class="mdescRight">maps the key to the node address and frequency <br /></td></tr>
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<a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/unordered_map.html">std::unordered_map</a>&lt; int, <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/utility/pair.html">std::pair</a>&lt; <a class="el" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html">CacheNode</a>&lt; K, V &gt; *, <a class="el" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html">CacheNode</a>&lt; K, V &gt; * &gt; &gt;&#160;</td><td class="memItemRight" valign="bottom"><b>freq_map</b></td></tr>
<tr class="memdesc:aba5d59d0f6ab0c0d30a92551ca5a05f2"><td class="mdescLeft">&#160;</td><td class="mdescRight">maps the frequency to doubly linked list <br /></td></tr>
<tr class="memitem:aba5d59d0f6ab0c0d30a92551ca5a05f2" id="r_aba5d59d0f6ab0c0d30a92551ca5a05f2"><td class="memItemLeft" align="right" valign="top">std::unordered_map&lt; int, std::pair&lt; <a class="el" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html">CacheNode</a>&lt; K, V &gt; *, <a class="el" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html">CacheNode</a>&lt; K, V &gt; * &gt; &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#aba5d59d0f6ab0c0d30a92551ca5a05f2">freq_map</a></td></tr>
<tr class="memdesc:aba5d59d0f6ab0c0d30a92551ca5a05f2"><td class="mdescLeft">&#160;</td><td class="mdescRight">maps the frequency to doubly linked list <br /></td></tr>
<tr class="separator:aba5d59d0f6ab0c0d30a92551ca5a05f2"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6de844d1589a809239cc07752f311285" id="r_a6de844d1589a809239cc07752f311285"><td class="memItemLeft" align="right" valign="top"><a id="a6de844d1589a809239cc07752f311285" name="a6de844d1589a809239cc07752f311285"></a>
int&#160;</td><td class="memItemRight" valign="bottom"><b>minFreq</b></td></tr>
<tr class="memdesc:a6de844d1589a809239cc07752f311285"><td class="mdescLeft">&#160;</td><td class="mdescRight">minimum frequency in the cache <br /></td></tr>
<tr class="memitem:a6de844d1589a809239cc07752f311285" id="r_a6de844d1589a809239cc07752f311285"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a6de844d1589a809239cc07752f311285">minFreq</a></td></tr>
<tr class="memdesc:a6de844d1589a809239cc07752f311285"><td class="mdescLeft">&#160;</td><td class="mdescRight">minimum frequency in the cache <br /></td></tr>
<tr class="separator:a6de844d1589a809239cc07752f311285"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3acc10e6bb67d9d9c4187f625723e6c5" id="r_a3acc10e6bb67d9d9c4187f625723e6c5"><td class="memItemLeft" align="right" valign="top"><a id="a3acc10e6bb67d9d9c4187f625723e6c5" name="a3acc10e6bb67d9d9c4187f625723e6c5"></a>
int&#160;</td><td class="memItemRight" valign="bottom"><b>_capacity</b></td></tr>
<tr class="memdesc:a3acc10e6bb67d9d9c4187f625723e6c5"><td class="mdescLeft">&#160;</td><td class="mdescRight">maximum capacity of the cache <br /></td></tr>
<tr class="memitem:a3acc10e6bb67d9d9c4187f625723e6c5" id="r_a3acc10e6bb67d9d9c4187f625723e6c5"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a3acc10e6bb67d9d9c4187f625723e6c5">_capacity</a></td></tr>
<tr class="memdesc:a3acc10e6bb67d9d9c4187f625723e6c5"><td class="mdescLeft">&#160;</td><td class="mdescRight">maximum capacity of the cache <br /></td></tr>
<tr class="separator:a3acc10e6bb67d9d9c4187f625723e6c5"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
@@ -186,6 +199,8 @@ class others::Cache::LFUCache&lt; K, V &gt;</div><p><a class="el" href="../../df
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html#l00064">64</a> of file <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html">lfu_cache.cpp</a>.</p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="affd7776c246caa2d0f92fd8616f6e5dc" name="affd7776c246caa2d0f92fd8616f6e5dc"></a>
<h2 class="memtitle"><span class="permalink"><a href="#affd7776c246caa2d0f92fd8616f6e5dc">&#9670;&#160;</a></span>LFUCache()</h2>
@@ -219,9 +234,11 @@ template&lt;typename K , typename V &gt; </div>
</table>
</dd>
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<p class="definition">Definition at line <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html#l00078">78</a> of file <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html">lfu_cache.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 78</span>: <a class="code hl_variable" href="#a6de844d1589a809239cc07752f311285">minFreq</a>(0), <a class="code hl_variable" href="#a3acc10e6bb67d9d9c4187f625723e6c5">_capacity</a>(<a class="code hl_variable" href="#a3acc10e6bb67d9d9c4187f625723e6c5">_capacity</a>) {}</div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_f_u_cache_html_a3acc10e6bb67d9d9c4187f625723e6c5"><div class="ttname"><a href="#a3acc10e6bb67d9d9c4187f625723e6c5">others::Cache::LFUCache::_capacity</a></div><div class="ttdeci">int _capacity</div><div class="ttdoc">maximum capacity of the cache</div><div class="ttdef"><b>Definition</b> lfu_cache.cpp:71</div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_f_u_cache_html_a6de844d1589a809239cc07752f311285"><div class="ttname"><a href="#a6de844d1589a809239cc07752f311285">others::Cache::LFUCache::minFreq</a></div><div class="ttdeci">int minFreq</div><div class="ttdoc">minimum frequency in the cache</div><div class="ttdef"><b>Definition</b> lfu_cache.cpp:70</div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_f_u_cache_html_a3acc10e6bb67d9d9c4187f625723e6c5"><div class="ttname"><a href="#a3acc10e6bb67d9d9c4187f625723e6c5">others::Cache::LFUCache::_capacity</a></div><div class="ttdeci">int _capacity</div><div class="ttdoc">maximum capacity of the cache</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d65/lfu__cache_8cpp_source.html#l00071">lfu_cache.cpp:71</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_f_u_cache_html_a6de844d1589a809239cc07752f311285"><div class="ttname"><a href="#a6de844d1589a809239cc07752f311285">others::Cache::LFUCache::minFreq</a></div><div class="ttdeci">int minFreq</div><div class="ttdoc">minimum frequency in the cache</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d65/lfu__cache_8cpp_source.html#l00070">lfu_cache.cpp:70</a></div></div>
</div><!-- fragment -->
</div>
</div>
@@ -251,6 +268,8 @@ template&lt;typename K , typename V &gt; </div>
</div><div class="memdoc">
<p>destructs the cache, iterates on the map and deletes every node present in the cache. </p>
<p class="definition">Definition at line <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html#l00235">235</a> of file <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html">lfu_cache.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 235</span> {</div>
<div class="line"><span class="lineno"> 236</span> <span class="keyword">auto</span> it = <a class="code hl_variable" href="#ac7684879e2e5da3d8bc5b1699ee42d35">node_map</a>.begin();</div>
<div class="line"><span class="lineno"> 237</span> <span class="keywordflow">while</span> (it != <a class="code hl_variable" href="#ac7684879e2e5da3d8bc5b1699ee42d35">node_map</a>.end()) {</div>
@@ -258,7 +277,7 @@ template&lt;typename K , typename V &gt; </div>
<div class="line"><span class="lineno"> 239</span> ++it;</div>
<div class="line"><span class="lineno"> 240</span> }</div>
<div class="line"><span class="lineno"> 241</span> }</div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_f_u_cache_html_ac7684879e2e5da3d8bc5b1699ee42d35"><div class="ttname"><a href="#ac7684879e2e5da3d8bc5b1699ee42d35">others::Cache::LFUCache::node_map</a></div><div class="ttdeci">std::unordered_map&lt; K, std::pair&lt; CacheNode&lt; K, V &gt; *, int &gt; &gt; node_map</div><div class="ttdoc">maps the key to the node address and frequency</div><div class="ttdef"><b>Definition</b> lfu_cache.cpp:66</div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_f_u_cache_html_ac7684879e2e5da3d8bc5b1699ee42d35"><div class="ttname"><a href="#ac7684879e2e5da3d8bc5b1699ee42d35">others::Cache::LFUCache::node_map</a></div><div class="ttdeci">std::unordered_map&lt; K, std::pair&lt; CacheNode&lt; K, V &gt; *, int &gt; &gt; node_map</div><div class="ttdoc">maps the key to the node address and frequency</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d65/lfu__cache_8cpp_source.html#l00066">lfu_cache.cpp:66</a></div></div>
</div><!-- fragment -->
</div>
</div>
@@ -290,6 +309,8 @@ template&lt;typename K , typename V &gt; </div>
<p>Returns the total capacity of the cache. </p>
<dl class="section return"><dt>Returns</dt><dd>Total capacity of the cache </dd></dl>
<p class="definition">Definition at line <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html#l00223">223</a> of file <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html">lfu_cache.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 223</span>{ <span class="keywordflow">return</span> <a class="code hl_variable" href="#a3acc10e6bb67d9d9c4187f625723e6c5">_capacity</a>; }</div>
</div><!-- fragment -->
</div>
@@ -321,6 +342,8 @@ template&lt;typename K , typename V &gt; </div>
<p>returns true if the cache is empty, false otherwise. </p>
<dl class="section return"><dt>Returns</dt><dd>true if the cache is empty, false otherwise. </dd></dl>
<p class="definition">Definition at line <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html#l00229">229</a> of file <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html">lfu_cache.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 229</span>{ <span class="keywordflow">return</span> <a class="code hl_variable" href="#ac7684879e2e5da3d8bc5b1699ee42d35">node_map</a>.empty(); }</div>
</div><!-- fragment -->
</div>
@@ -364,9 +387,11 @@ template&lt;typename K , typename V &gt; </div>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html#l00202">202</a> of file <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html">lfu_cache.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 202</span> {</div>
<div class="line"><span class="lineno"> 203</span> <span class="keywordflow">if</span> (!<a class="code hl_variable" href="#ac7684879e2e5da3d8bc5b1699ee42d35">node_map</a>.count(key)) {</div>
<div class="line"><span class="lineno"> 204</span> <span class="keywordflow">throw</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/error/runtime_error.html">std::runtime_error</a>(<span class="stringliteral">&quot;key is not present in the cache&quot;</span>);</div>
<div class="line"><span class="lineno"> 204</span> <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">&quot;key is not present in the cache&quot;</span>);</div>
<div class="line"><span class="lineno"> 205</span> }</div>
<div class="line"><span class="lineno"> 206</span> </div>
<div class="line"><span class="lineno"> 207</span> <span class="comment">// increase the frequency and return the value</span></div>
@@ -374,14 +399,8 @@ template&lt;typename K , typename V &gt; </div>
<div class="line"><span class="lineno"> 209</span> <a class="code hl_function" href="#a16a25c102554c5653721a5112ef676c9">increase_frequency</a>(<a class="code hl_variable" href="#ac7684879e2e5da3d8bc5b1699ee42d35">node_map</a>[key]);</div>
<div class="line"><span class="lineno"> 210</span> <span class="keywordflow">return</span> value;</div>
<div class="line"><span class="lineno"> 211</span> }</div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_f_u_cache_html_a16a25c102554c5653721a5112ef676c9"><div class="ttname"><a href="#a16a25c102554c5653721a5112ef676c9">others::Cache::LFUCache::increase_frequency</a></div><div class="ttdeci">void increase_frequency(std::pair&lt; CacheNode&lt; K, V &gt; *, int &gt; &amp;p_node)</div><div class="ttdoc">increase the frequency of node and push it in the respective list.</div><div class="ttdef"><b>Definition</b> lfu_cache.cpp:109</div></div>
<div class="ttc" id="aruntime_error_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/error/runtime_error.html">std::runtime_error</a></div></div>
</div><!-- fragment --><div class="dynheader">
Here is the call graph for this function:</div>
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<div class="center"><iframe scrolling="no" frameborder="0" src="../../df/d8f/classothers_1_1_cache_1_1_l_f_u_cache_a58e37d3713f28d36abbb8cdf6c432781_cgraph.svg" width="656" height="52"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
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<div class="ttc" id="aclassothers_1_1_cache_1_1_l_f_u_cache_html_a16a25c102554c5653721a5112ef676c9"><div class="ttname"><a href="#a16a25c102554c5653721a5112ef676c9">others::Cache::LFUCache::increase_frequency</a></div><div class="ttdeci">void increase_frequency(std::pair&lt; CacheNode&lt; K, V &gt; *, int &gt; &amp;p_node)</div><div class="ttdoc">increase the frequency of node and push it in the respective list.</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d65/lfu__cache_8cpp_source.html#l00109">lfu_cache.cpp:109</a></div></div>
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<a id="a16a25c102554c5653721a5112ef676c9" name="a16a25c102554c5653721a5112ef676c9"></a>
@@ -398,7 +417,7 @@ template&lt;typename K , typename V &gt; </div>
<tr>
<td class="memname">void <a class="el" href="../../df/d8f/classothers_1_1_cache_1_1_l_f_u_cache.html">others::Cache::LFUCache</a>&lt; K, V &gt;::increase_frequency </td>
<td>(</td>
<td class="paramtype"><a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/utility/pair.html">std::pair</a>&lt; <a class="el" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html">CacheNode</a>&lt; K, V &gt; *, int &gt; &amp;</td> <td class="paramname"><span class="paramname"><em>p_node</em></span></td><td>)</td>
<td class="paramtype">std::pair&lt; <a class="el" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html">CacheNode</a>&lt; K, V &gt; *, int &gt; &amp;</td> <td class="paramname"><span class="paramname"><em>p_node</em></span></td><td>)</td>
<td></td>
</tr>
</table>
@@ -416,11 +435,13 @@ template&lt;typename K , typename V &gt; </div>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html#l00109">109</a> of file <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html">lfu_cache.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 109</span> {</div>
<div class="line"><span class="lineno"> 110</span> CacheNode&lt;K, V&gt; *<a class="code hl_class" href="../../d5/da1/structnode.html">node</a> = p_node.first;</div>
<div class="line"><span class="lineno"> 111</span> <span class="keywordtype">int</span> freq = p_node.second;</div>
<div class="line"><span class="lineno"> 112</span> </div>
<div class="line"><span class="lineno"> 113</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/utility/pair.html">std::pair&lt;CacheNode&lt;K, V&gt;</a> *, CacheNode&lt;K, V&gt; *&gt; &amp;p = <a class="code hl_variable" href="#aba5d59d0f6ab0c0d30a92551ca5a05f2">freq_map</a>[freq];</div>
<div class="line"><span class="lineno"> 113</span> std::pair&lt;CacheNode&lt;K, V&gt; *, CacheNode&lt;K, V&gt; *&gt; &amp;p = <a class="code hl_variable" href="#aba5d59d0f6ab0c0d30a92551ca5a05f2">freq_map</a>[freq];</div>
<div class="line"><span class="lineno"> 114</span> </div>
<div class="line"><span class="lineno"> 115</span> <span class="comment">// if the given node is the only node in the list,</span></div>
<div class="line"><span class="lineno"> 116</span> <span class="comment">// then erase the frequency from map</span></div>
@@ -432,38 +453,30 @@ template&lt;typename K , typename V &gt; </div>
<div class="line"><span class="lineno"> 122</span> }</div>
<div class="line"><span class="lineno"> 123</span> } <span class="keywordflow">else</span> {</div>
<div class="line"><span class="lineno"> 124</span> <span class="comment">// remove the given node from current freq linked list</span></div>
<div class="line"><span class="lineno"> 125</span> CacheNode&lt;K, V&gt; *<a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/iterator/prev.html">prev</a> = <a class="code hl_class" href="../../d5/da1/structnode.html">node</a>-&gt;prev;</div>
<div class="line"><span class="lineno"> 126</span> CacheNode&lt;K, V&gt; *<a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/iterator/next.html">next</a> = <a class="code hl_class" href="../../d5/da1/structnode.html">node</a>-&gt;next;</div>
<div class="line"><span class="lineno"> 125</span> CacheNode&lt;K, V&gt; *prev = <a class="code hl_class" href="../../d5/da1/structnode.html">node</a>-&gt;prev;</div>
<div class="line"><span class="lineno"> 126</span> CacheNode&lt;K, V&gt; *next = <a class="code hl_class" href="../../d5/da1/structnode.html">node</a>-&gt;next;</div>
<div class="line"><span class="lineno"> 127</span> <a class="code hl_class" href="../../d5/da1/structnode.html">node</a>-&gt;prev = <span class="keyword">nullptr</span>;</div>
<div class="line"><span class="lineno"> 128</span> <a class="code hl_class" href="../../d5/da1/structnode.html">node</a>-&gt;next = <span class="keyword">nullptr</span>;</div>
<div class="line"><span class="lineno"> 129</span> </div>
<div class="line"><span class="lineno"> 130</span> <span class="keywordflow">if</span> (prev) {</div>
<div class="line"><span class="lineno"> 131</span> <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/iterator/prev.html">prev</a>-&gt;next = <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/iterator/next.html">next</a>;</div>
<div class="line"><span class="lineno"> 131</span> prev-&gt;next = next;</div>
<div class="line"><span class="lineno"> 132</span> } <span class="keywordflow">else</span> {</div>
<div class="line"><span class="lineno"> 133</span> p.first = <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/iterator/next.html">next</a>;</div>
<div class="line"><span class="lineno"> 133</span> p.first = next;</div>
<div class="line"><span class="lineno"> 134</span> }</div>
<div class="line"><span class="lineno"> 135</span> </div>
<div class="line"><span class="lineno"> 136</span> <span class="keywordflow">if</span> (next) {</div>
<div class="line"><span class="lineno"> 137</span> <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/iterator/next.html">next</a>-&gt;prev = <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/iterator/prev.html">prev</a>;</div>
<div class="line"><span class="lineno"> 137</span> next-&gt;prev = prev;</div>
<div class="line"><span class="lineno"> 138</span> } <span class="keywordflow">else</span> {</div>
<div class="line"><span class="lineno"> 139</span> p.second = <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/iterator/prev.html">prev</a>;</div>
<div class="line"><span class="lineno"> 139</span> p.second = prev;</div>
<div class="line"><span class="lineno"> 140</span> }</div>
<div class="line"><span class="lineno"> 141</span> }</div>
<div class="line"><span class="lineno"> 142</span> <a class="code hl_function" href="#adad4ab43141fb8ba43facd3a71e07047">push</a>(freq + 1, <a class="code hl_class" href="../../d5/da1/structnode.html">node</a>);</div>
<div class="line"><span class="lineno"> 143</span> ++p_node.second;</div>
<div class="line"><span class="lineno"> 144</span> }</div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_f_u_cache_html_aba5d59d0f6ab0c0d30a92551ca5a05f2"><div class="ttname"><a href="#aba5d59d0f6ab0c0d30a92551ca5a05f2">others::Cache::LFUCache::freq_map</a></div><div class="ttdeci">std::unordered_map&lt; int, std::pair&lt; CacheNode&lt; K, V &gt; *, CacheNode&lt; K, V &gt; * &gt; &gt; freq_map</div><div class="ttdoc">maps the frequency to doubly linked list</div><div class="ttdef"><b>Definition</b> lfu_cache.cpp:68</div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_f_u_cache_html_adad4ab43141fb8ba43facd3a71e07047"><div class="ttname"><a href="#adad4ab43141fb8ba43facd3a71e07047">others::Cache::LFUCache::push</a></div><div class="ttdeci">void push(int freq, CacheNode&lt; K, V &gt; *node)</div><div class="ttdoc">push the node at first position in the linked list of given frequency</div><div class="ttdef"><b>Definition</b> lfu_cache.cpp:88</div></div>
<div class="ttc" id="anext_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/iterator/next.html">std::next</a></div><div class="ttdeci">T next(T... args)</div></div>
<div class="ttc" id="apair_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/utility/pair.html">std::pair</a></div></div>
<div class="ttc" id="aprev_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/iterator/prev.html">std::prev</a></div><div class="ttdeci">T prev(T... args)</div></div>
<div class="ttc" id="astructnode_html"><div class="ttname"><a href="../../d5/da1/structnode.html">node</a></div><div class="ttdef"><b>Definition</b> binary_search_tree.cpp:11</div></div>
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Here is the call graph for this function:</div>
<div class="dyncontent">
<div class="center"><iframe scrolling="no" frameborder="0" src="../../df/d8f/classothers_1_1_cache_1_1_l_f_u_cache_a16a25c102554c5653721a5112ef676c9_cgraph.svg" width="408" height="52"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
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<div class="ttc" id="aclassothers_1_1_cache_1_1_l_f_u_cache_html_aba5d59d0f6ab0c0d30a92551ca5a05f2"><div class="ttname"><a href="#aba5d59d0f6ab0c0d30a92551ca5a05f2">others::Cache::LFUCache::freq_map</a></div><div class="ttdeci">std::unordered_map&lt; int, std::pair&lt; CacheNode&lt; K, V &gt; *, CacheNode&lt; K, V &gt; * &gt; &gt; freq_map</div><div class="ttdoc">maps the frequency to doubly linked list</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d65/lfu__cache_8cpp_source.html#l00068">lfu_cache.cpp:68</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_f_u_cache_html_adad4ab43141fb8ba43facd3a71e07047"><div class="ttname"><a href="#adad4ab43141fb8ba43facd3a71e07047">others::Cache::LFUCache::push</a></div><div class="ttdeci">void push(int freq, CacheNode&lt; K, V &gt; *node)</div><div class="ttdoc">push the node at first position in the linked list of given frequency</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d65/lfu__cache_8cpp_source.html#l00088">lfu_cache.cpp:88</a></div></div>
<div class="ttc" id="astructnode_html"><div class="ttname"><a href="../../d5/da1/structnode.html">node</a></div><div class="ttdef"><b>Definition</b> <a href="../../d3/d26/binary__search__tree_8cpp_source.html#l00011">binary_search_tree.cpp:11</a></div></div>
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@@ -492,8 +505,10 @@ template&lt;typename K , typename V &gt; </div>
</div><div class="memdoc">
<p>pop the last node in the least frequently used linked list </p>
<p class="definition">Definition at line <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html#l00149">149</a> of file <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html">lfu_cache.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 149</span> {</div>
<div class="line"><span class="lineno"> 150</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/utility/pair.html">std::pair&lt;CacheNode&lt;K, V&gt;</a> *, CacheNode&lt;K, V&gt; *&gt; &amp;p = <a class="code hl_variable" href="#aba5d59d0f6ab0c0d30a92551ca5a05f2">freq_map</a>[<a class="code hl_variable" href="#a6de844d1589a809239cc07752f311285">minFreq</a>];</div>
<div class="line"><span class="lineno"> 150</span> std::pair&lt;CacheNode&lt;K, V&gt; *, CacheNode&lt;K, V&gt; *&gt; &amp;p = <a class="code hl_variable" href="#aba5d59d0f6ab0c0d30a92551ca5a05f2">freq_map</a>[<a class="code hl_variable" href="#a6de844d1589a809239cc07752f311285">minFreq</a>];</div>
<div class="line"><span class="lineno"> 151</span> </div>
<div class="line"><span class="lineno"> 152</span> <span class="comment">// if there is only one node</span></div>
<div class="line"><span class="lineno"> 153</span> <span class="comment">// remove the node and erase</span></div>
@@ -550,6 +565,8 @@ template&lt;typename K , typename V &gt; </div>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html#l00088">88</a> of file <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html">lfu_cache.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 88</span> {</div>
<div class="line"><span class="lineno"> 89</span> <span class="comment">// if freq is not present, then make a new list with node as the head as</span></div>
<div class="line"><span class="lineno"> 90</span> <span class="comment">// well as tail.</span></div>
@@ -558,7 +575,7 @@ template&lt;typename K , typename V &gt; </div>
<div class="line"><span class="lineno"> 93</span> <span class="keywordflow">return</span>;</div>
<div class="line"><span class="lineno"> 94</span> }</div>
<div class="line"><span class="lineno"> 95</span> </div>
<div class="line"><span class="lineno"> 96</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/utility/pair.html">std::pair&lt;CacheNode&lt;K, V&gt;</a> *, CacheNode&lt;K, V&gt; *&gt; &amp;p = <a class="code hl_variable" href="#aba5d59d0f6ab0c0d30a92551ca5a05f2">freq_map</a>[freq];</div>
<div class="line"><span class="lineno"> 96</span> std::pair&lt;CacheNode&lt;K, V&gt; *, CacheNode&lt;K, V&gt; *&gt; &amp;p = <a class="code hl_variable" href="#aba5d59d0f6ab0c0d30a92551ca5a05f2">freq_map</a>[freq];</div>
<div class="line"><span class="lineno"> 97</span> </div>
<div class="line"><span class="lineno"> 98</span> <span class="comment">// insert the node at the beginning of the linked list and update the</span></div>
<div class="line"><span class="lineno"> 99</span> <span class="comment">// head.</span></div>
@@ -566,7 +583,7 @@ template&lt;typename K , typename V &gt; </div>
<div class="line"><span class="lineno"> 101</span> <a class="code hl_class" href="../../d5/da1/structnode.html">node</a>-&gt;next = p.first;</div>
<div class="line"><span class="lineno"> 102</span> p.first = <a class="code hl_typedef" href="../../d8/dee/avltree_8cpp.html#a74f0cf18a0e5b832d9994e2f2d022287">node</a>;</div>
<div class="line"><span class="lineno"> 103</span> }</div>
<div class="ttc" id="aavltree_8cpp_html_a74f0cf18a0e5b832d9994e2f2d022287"><div class="ttname"><a href="../../d8/dee/avltree_8cpp.html#a74f0cf18a0e5b832d9994e2f2d022287">node</a></div><div class="ttdeci">struct node { int data; int height; struct node *left; struct node *right;} node</div><div class="ttdoc">for std::queue</div><div class="ttdef"><b>Definition</b> avltree.cpp:13</div></div>
<div class="ttc" id="aavltree_8cpp_html_a74f0cf18a0e5b832d9994e2f2d022287"><div class="ttname"><a href="../../d8/dee/avltree_8cpp.html#a74f0cf18a0e5b832d9994e2f2d022287">node</a></div><div class="ttdeci">struct node { int data; int height; struct node *left; struct node *right;} node</div><div class="ttdoc">for std::queue</div><div class="ttdef"><b>Definition</b> <a href="../../d8/dee/avltree_8cpp_source.html#l00013">avltree.cpp:13</a></div></div>
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@@ -607,6 +624,8 @@ template&lt;typename K , typename V &gt; </div>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html#l00174">174</a> of file <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html">lfu_cache.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 174</span> {</div>
<div class="line"><span class="lineno"> 175</span> <span class="comment">// update the value if key already exists</span></div>
<div class="line"><span class="lineno"> 176</span> <span class="keywordflow">if</span> (<a class="code hl_variable" href="#ac7684879e2e5da3d8bc5b1699ee42d35">node_map</a>.count(key)) {</div>
@@ -628,13 +647,8 @@ template&lt;typename K , typename V &gt; </div>
<div class="line"><span class="lineno"> 192</span> <a class="code hl_variable" href="#a6de844d1589a809239cc07752f311285">minFreq</a> = 1;</div>
<div class="line"><span class="lineno"> 193</span> <a class="code hl_function" href="#adad4ab43141fb8ba43facd3a71e07047">push</a>(1, <a class="code hl_class" href="../../d5/da1/structnode.html">node</a>);</div>
<div class="line"><span class="lineno"> 194</span> }</div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_f_u_cache_html_ab3561ab204754295199f9566924f7e69"><div class="ttname"><a href="#ab3561ab204754295199f9566924f7e69">others::Cache::LFUCache::pop</a></div><div class="ttdeci">void pop()</div><div class="ttdoc">pop the last node in the least frequently used linked list</div><div class="ttdef"><b>Definition</b> lfu_cache.cpp:149</div></div>
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<div class="ttc" id="aclassothers_1_1_cache_1_1_l_f_u_cache_html_ab3561ab204754295199f9566924f7e69"><div class="ttname"><a href="#ab3561ab204754295199f9566924f7e69">others::Cache::LFUCache::pop</a></div><div class="ttdeci">void pop()</div><div class="ttdoc">pop the last node in the least frequently used linked list</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d65/lfu__cache_8cpp_source.html#l00149">lfu_cache.cpp:149</a></div></div>
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@@ -664,12 +678,127 @@ template&lt;typename K , typename V &gt; </div>
<p>Returns the number of items present in the cache. </p>
<dl class="section return"><dt>Returns</dt><dd>number of items in the cache </dd></dl>
<p class="definition">Definition at line <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html#l00217">217</a> of file <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html">lfu_cache.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 217</span>{ <span class="keywordflow">return</span> <a class="code hl_variable" href="#ac7684879e2e5da3d8bc5b1699ee42d35">node_map</a>.size(); }</div>
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<h2 class="groupheader">Member Data Documentation</h2>
<a id="a3acc10e6bb67d9d9c4187f625723e6c5" name="a3acc10e6bb67d9d9c4187f625723e6c5"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3acc10e6bb67d9d9c4187f625723e6c5">&#9670;&#160;</a></span>_capacity</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename K , typename V &gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">int <a class="el" href="../../df/d8f/classothers_1_1_cache_1_1_l_f_u_cache.html">others::Cache::LFUCache</a>&lt; K, V &gt;::_capacity</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">private</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>maximum capacity of the cache </p>
<p class="definition">Definition at line <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html#l00071">71</a> of file <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html">lfu_cache.cpp</a>.</p>
</div>
</div>
<a id="aba5d59d0f6ab0c0d30a92551ca5a05f2" name="aba5d59d0f6ab0c0d30a92551ca5a05f2"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aba5d59d0f6ab0c0d30a92551ca5a05f2">&#9670;&#160;</a></span>freq_map</h2>
<div class="memitem">
<div class="memproto">
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template&lt;typename K , typename V &gt; </div>
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<tr>
<td class="mlabels-left">
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<tr>
<td class="memname">std::unordered_map&lt;int, std::pair&lt;<a class="el" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html">CacheNode</a>&lt;K, V&gt; *, <a class="el" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html">CacheNode</a>&lt;K, V&gt; *&gt; &gt; <a class="el" href="../../df/d8f/classothers_1_1_cache_1_1_l_f_u_cache.html">others::Cache::LFUCache</a>&lt; K, V &gt;::freq_map</td>
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<p>maps the frequency to doubly linked list </p>
<p class="definition">Definition at line <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html#l00068">68</a> of file <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html">lfu_cache.cpp</a>.</p>
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<a id="a6de844d1589a809239cc07752f311285" name="a6de844d1589a809239cc07752f311285"></a>
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<td class="memname">int <a class="el" href="../../df/d8f/classothers_1_1_cache_1_1_l_f_u_cache.html">others::Cache::LFUCache</a>&lt; K, V &gt;::minFreq</td>
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<p>minimum frequency in the cache </p>
<p class="definition">Definition at line <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html#l00070">70</a> of file <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html">lfu_cache.cpp</a>.</p>
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<a id="ac7684879e2e5da3d8bc5b1699ee42d35" name="ac7684879e2e5da3d8bc5b1699ee42d35"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ac7684879e2e5da3d8bc5b1699ee42d35">&#9670;&#160;</a></span>node_map</h2>
<div class="memitem">
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template&lt;typename K , typename V &gt; </div>
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<td class="memname">std::unordered_map&lt;K, std::pair&lt;<a class="el" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html">CacheNode</a>&lt;K, V&gt; *, int&gt; &gt; <a class="el" href="../../df/d8f/classothers_1_1_cache_1_1_l_f_u_cache.html">others::Cache::LFUCache</a>&lt; K, V &gt;::node_map</td>
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<p>maps the key to the node address and frequency </p>
<p class="definition">Definition at line <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html#l00066">66</a> of file <a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html">lfu_cache.cpp</a>.</p>
</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li>others/<a class="el" href="../../d9/d65/lfu__cache_8cpp.html">lfu_cache.cpp</a></li>
<li>others/<a class="el" href="../../d9/d65/lfu__cache_8cpp_source.html">lfu_cache.cpp</a></li>
</ul>
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