mirror of
https://github.com/TheAlgorithms/C-Plus-Plus.git
synced 2026-03-21 04:18:34 +08:00
177 lines
13 KiB
HTML
177 lines
13 KiB
HTML
<!-- HTML header for doxygen 1.12.0-->
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
|
<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US">
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
|
|
<meta http-equiv="X-UA-Compatible" content="IE=11"/>
|
|
<meta name="generator" content="Doxygen 1.14.0"/>
|
|
<meta name="viewport" content="width=device-width, initial-scale=1"/>
|
|
<title>TheAlgorithms/C++: math/factorial_memoization.cpp Source File</title>
|
|
<link rel="icon" href="../../favicon.svg" type="image/x-icon" />
|
|
<link href="../../tabs.css" rel="stylesheet" type="text/css"/>
|
|
<script type="text/javascript" src="../../jquery.js"></script>
|
|
<script type="text/javascript" src="../../dynsections.js"></script>
|
|
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/@xpack-3rd-party/doxygen-awesome-css@2.2.0-1/doxygen-awesome-darkmode-toggle.js"></script>
|
|
<script type="text/javascript">
|
|
DoxygenAwesomeDarkModeToggle.init()
|
|
</script>
|
|
<script type="text/javascript" src="../../clipboard.js"></script>
|
|
<link href="../../navtree.css" rel="stylesheet" type="text/css"/>
|
|
<script type="text/javascript" src="../../navtreedata.js"></script>
|
|
<script type="text/javascript" src="../../navtree.js"></script>
|
|
<script type="text/javascript" src="../../cookie.js"></script>
|
|
<link href="../../search/search.css" rel="stylesheet" type="text/css"/>
|
|
<script type="text/javascript" src="../../search/searchdata.js"></script>
|
|
<script type="text/javascript" src="../../search/search.js"></script>
|
|
<script type="text/javascript">
|
|
window.MathJax = {
|
|
options: {
|
|
ignoreHtmlClass: 'tex2jax_ignore',
|
|
processHtmlClass: 'tex2jax_process'
|
|
},
|
|
loader: {
|
|
load: ['[tex]/ams']
|
|
},
|
|
tex: {
|
|
macros: {},
|
|
packages: ['base','configmacros','ams']
|
|
}
|
|
};
|
|
</script>
|
|
<script type="text/javascript" id="MathJax-script" async="async" src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml.js"></script>
|
|
<link href="../../doxygen.css" rel="stylesheet" type="text/css" />
|
|
<link href="../../doxygen-awesome.css" rel="stylesheet" type="text/css"/>
|
|
</head>
|
|
<body>
|
|
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
|
|
<div id="titlearea">
|
|
<table cellspacing="0" cellpadding="0">
|
|
<tbody>
|
|
<tr id="projectrow">
|
|
<td id="projectlogo"><img alt="Logo" src="../../project_logo.png"/></td>
|
|
<td id="projectalign">
|
|
<div id="projectname">TheAlgorithms/C++<span id="projectnumber"> 1.0.0</span>
|
|
</div>
|
|
<div id="projectbrief">All the algorithms implemented in C++</div>
|
|
</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
</div>
|
|
<!-- end header part -->
|
|
<!-- Generated by Doxygen 1.14.0 -->
|
|
<script type="text/javascript">
|
|
var searchBox = new SearchBox("searchBox", "../../search/",'.html');
|
|
</script>
|
|
<script type="text/javascript">
|
|
$(function() { codefold.init(); });
|
|
</script>
|
|
<script type="text/javascript" src="../../menudata.js"></script>
|
|
<script type="text/javascript" src="../../menu.js"></script>
|
|
<script type="text/javascript">
|
|
$(function() {
|
|
initMenu('../../',true,false,'search.php','Search',true);
|
|
$(function() { init_search(); });
|
|
});
|
|
</script>
|
|
<div id="main-nav"></div>
|
|
</div><!-- top -->
|
|
<div id="side-nav" class="ui-resizable side-nav-resizable">
|
|
<div id="nav-tree">
|
|
<div id="nav-tree-contents">
|
|
<div id="nav-sync" class="sync"></div>
|
|
</div>
|
|
</div>
|
|
<div id="splitbar" style="-moz-user-select:none;"
|
|
class="ui-resizable-handle">
|
|
</div>
|
|
</div>
|
|
<script type="text/javascript">
|
|
$(function(){initNavTree('d2/d96/factorial__memoization_8cpp_source.html','../../',''); });
|
|
</script>
|
|
<div id="container">
|
|
<div id="doc-content">
|
|
<!-- window showing the filter options -->
|
|
<div id="MSearchSelectWindow"
|
|
onmouseover="return searchBox.OnSearchSelectShow()"
|
|
onmouseout="return searchBox.OnSearchSelectHide()"
|
|
onkeydown="return searchBox.OnSearchSelectKey(event)">
|
|
</div>
|
|
|
|
<!-- iframe showing the search results (closed by default) -->
|
|
<div id="MSearchResultsWindow">
|
|
<div id="MSearchResults">
|
|
<div class="SRPage">
|
|
<div id="SRIndex">
|
|
<div id="SRResults"></div>
|
|
<div class="SRStatus" id="Loading">Loading...</div>
|
|
<div class="SRStatus" id="Searching">Searching...</div>
|
|
<div class="SRStatus" id="NoMatches">No Matches</div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="header">
|
|
<div class="headertitle"><div class="title">factorial_memoization.cpp</div></div>
|
|
</div><!--header-->
|
|
<div class="contents">
|
|
<a href="../../d2/d96/factorial__memoization_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span></div>
|
|
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> </div>
|
|
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include <cassert></span> <span class="comment">// For test cases</span></div>
|
|
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#include <cstdint></span> <span class="comment">// For uint64_t</span></div>
|
|
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#include <vector></span> <span class="comment">// For std::vector</span></div>
|
|
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> </div>
|
|
<div class="foldopen" id="foldopen00027" data-start="{" data-end="};">
|
|
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"><a class="line" href="../../da/d15/class_memorised_factorial.html"> 27</a></span><span class="keyword">class </span><a class="code hl_class" href="../../da/d15/class_memorised_factorial.html">MemorisedFactorial</a> {</div>
|
|
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> std::vector<std::uint64_t> known_values = {1};</div>
|
|
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> </div>
|
|
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">public</span>:</div>
|
|
<div class="foldopen" id="foldopen00036" data-start="{" data-end="}">
|
|
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"><a class="line" href="../../da/d15/class_memorised_factorial.html#a35506357960575f150b44ae32fcbad29"> 36</a></span> std::uint64_t <a class="code hl_function" href="../../da/d15/class_memorised_factorial.html#a35506357960575f150b44ae32fcbad29">operator()</a>(std::uint64_t n) {</div>
|
|
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> <span class="keywordflow">if</span> (n >= this->known_values.size()) {</div>
|
|
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> this->known_values.push_back(n * this-><span class="keyword">operator</span>()(n - 1));</div>
|
|
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> }</div>
|
|
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="keywordflow">return</span> this->known_values.at(n);</div>
|
|
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> }</div>
|
|
</div>
|
|
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span>};</div>
|
|
</div>
|
|
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> </div>
|
|
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="keywordtype">void</span> test_MemorisedFactorial_in_order() {</div>
|
|
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="keyword">auto</span> <a class="code hl_function" href="../../dd/d47/namespacemath.html#a7e78996673df791014cfe540b183456a">factorial</a> = <a class="code hl_class" href="../../da/d15/class_memorised_factorial.html">MemorisedFactorial</a>();</div>
|
|
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> assert(<a class="code hl_function" href="../../dd/d47/namespacemath.html#a7e78996673df791014cfe540b183456a">factorial</a>(0) == 1);</div>
|
|
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> assert(<a class="code hl_function" href="../../dd/d47/namespacemath.html#a7e78996673df791014cfe540b183456a">factorial</a>(1) == 1);</div>
|
|
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> assert(<a class="code hl_function" href="../../dd/d47/namespacemath.html#a7e78996673df791014cfe540b183456a">factorial</a>(5) == 120);</div>
|
|
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> assert(<a class="code hl_function" href="../../dd/d47/namespacemath.html#a7e78996673df791014cfe540b183456a">factorial</a>(10) == 3628800);</div>
|
|
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span>}</div>
|
|
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> </div>
|
|
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span><span class="keywordtype">void</span> test_MemorisedFactorial_no_order() {</div>
|
|
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <span class="keyword">auto</span> <a class="code hl_function" href="../../dd/d47/namespacemath.html#a7e78996673df791014cfe540b183456a">factorial</a> = <a class="code hl_class" href="../../da/d15/class_memorised_factorial.html">MemorisedFactorial</a>();</div>
|
|
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> assert(<a class="code hl_function" href="../../dd/d47/namespacemath.html#a7e78996673df791014cfe540b183456a">factorial</a>(10) == 3628800);</div>
|
|
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span>}</div>
|
|
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span></div>
|
|
<div class="foldopen" id="foldopen00061" data-start="{" data-end="}">
|
|
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"><a class="line" href="../../d2/d96/factorial__memoization_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4"> 61</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="../../d2/d96/factorial__memoization_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a>() {</div>
|
|
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> test_MemorisedFactorial_in_order();</div>
|
|
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> test_MemorisedFactorial_no_order();</div>
|
|
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="keywordflow">return</span> 0;</div>
|
|
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span>}</div>
|
|
</div>
|
|
<div class="ttc" id="aclass_memorised_factorial_html"><div class="ttname"><a href="../../da/d15/class_memorised_factorial.html">MemorisedFactorial</a></div><div class="ttdef"><b>Definition</b> <a href="#l00027">factorial_memoization.cpp:27</a></div></div>
|
|
<div class="ttc" id="aclass_memorised_factorial_html_a35506357960575f150b44ae32fcbad29"><div class="ttname"><a href="../../da/d15/class_memorised_factorial.html#a35506357960575f150b44ae32fcbad29">MemorisedFactorial::operator()</a></div><div class="ttdeci">std::uint64_t operator()(std::uint64_t n)</div><div class="ttdef"><b>Definition</b> <a href="#l00036">factorial_memoization.cpp:36</a></div></div>
|
|
<div class="ttc" id="afactorial__memoization_8cpp_html_ae66f6b31b5ad750f1fe042a706a4e3d4"><div class="ttname"><a href="../../d2/d96/factorial__memoization_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a></div><div class="ttdeci">int main()</div><div class="ttdoc">Main function to run tests.</div><div class="ttdef"><b>Definition</b> <a href="#l00061">factorial_memoization.cpp:61</a></div></div>
|
|
<div class="ttc" id="anamespacemath_html_a7e78996673df791014cfe540b183456a"><div class="ttname"><a href="../../dd/d47/namespacemath.html#a7e78996673df791014cfe540b183456a">math::factorial</a></div><div class="ttdeci">uint64_t factorial(uint8_t n)</div><div class="ttdoc">function to find factorial of given number</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d00/factorial_8cpp_source.html#l00029">factorial.cpp:29</a></div></div>
|
|
</div><!-- fragment --></div><!-- contents -->
|
|
</div><!-- doc-content -->
|
|
</div><!-- container -->
|
|
<!-- start footer part -->
|
|
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
|
|
<ul>
|
|
<li class="navelem"><a href="../../dir_296d53ceaeaa7e099814a6def439fe8a.html">math</a></li><li class="navelem"><a href="../../d2/d96/factorial__memoization_8cpp.html">factorial_memoization.cpp</a></li>
|
|
<li class="footer">Generated by <a href="https://www.doxygen.org/index.html"><img class="footer" src="../../doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.14.0 </li>
|
|
</ul>
|
|
</div>
|
|
</body>
|
|
</html>
|