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realstealthninja
2025-05-19 11:38:33 +00:00
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d6/d2e/fenwick__tree_8cpp_source.html
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@@ -4,7 +4,7 @@
<head>
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<meta http-equiv="X-UA-Compatible" content="IE=11"/>
<meta name="generator" content="Doxygen 1.12.0"/>
<meta name="generator" content="Doxygen 1.13.2"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>TheAlgorithms/C++: range_queries/fenwick_tree.cpp Source File</title>
<link rel="icon" href="../../favicon.svg" type="image/x-icon" />
@@ -60,7 +60,7 @@ window.MathJax = {
</table>
</div>
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<!-- Generated by Doxygen 1.12.0 -->
<!-- Generated by Doxygen 1.13.2 -->
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/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
var searchBox = new SearchBox("searchBox", "../../search/",'.html');
@@ -124,18 +124,19 @@ $(function(){initNavTree('d6/d2e/fenwick__tree_8cpp_source.html','../../'); init
<div class="headertitle"><div class="title">fenwick_tree.cpp</div></div>
</div><!--header-->
<div class="contents">
<a href="../../d6/d2e/fenwick__tree_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>
<a href="../../d6/d2e/fenwick__tree_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="l00019" name="l00019"></a><span class="lineno"> 19</span> </div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#include &lt;cassert&gt;</span> </div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include &lt;iostream&gt;</span> </div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include &lt;vector&gt;</span> </div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> </div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span></div>
<div class="foldopen" id="foldopen00028" data-start="{" data-end="}">
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"><a class="line" href="../../dd/d69/namespacerange__queries.html"> 28</a></span><span class="keyword">namespace </span><a class="code hl_namespace" href="../../dd/d69/namespacerange__queries.html">range_queries</a> {</div>
<div class="foldopen" id="foldopen00032" data-start="{" data-end="};">
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"><a class="line" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html"> 32</a></span><span class="keyword">class </span><a class="code hl_class" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html">fenwick_tree</a> {</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"><a class="line" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html"> 32</a></span><span class="keyword">class </span><a class="code hl_function" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#a5ea37183524553bbf2234a36a44a4b9a">fenwick_tree</a> {</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"><a class="line" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#af9f543aa5976b8cc5422490b3d6250c6"> 33</a></span> <span class="keywordtype">size_t</span> <a class="code hl_variable" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#af9f543aa5976b8cc5422490b3d6250c6">n</a> = 0; </div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"><a class="line" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#af7b7a8c1c5724ed8683d7e28bef526e6"> 34</a></span> std::vector&lt;int&gt; <a class="code hl_variable" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#af7b7a8c1c5724ed8683d7e28bef526e6">bit</a>{}; </div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> </div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"><a class="line" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#ab492ebf07cab0e3c32d277ad986de801"> 41</a></span> <span class="keyword">inline</span> <span class="keywordtype">int</span> <a class="code hl_function" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#ab492ebf07cab0e3c32d277ad986de801">offset</a>(<span class="keywordtype">int</span> x) { <span class="keywordflow">return</span> (x &amp; (-x)); }</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
@@ -147,10 +148,10 @@ $(function(){initNavTree('d6/d2e/fenwick__tree_8cpp_source.html','../../'); init
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> }</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> }</div>
</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> </div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span></div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"><a class="line" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#aef7ba885b91af093e9e514358fa0f36c"> 64</a></span> <span class="keyword">explicit</span> <a class="code hl_function" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#aef7ba885b91af093e9e514358fa0f36c">fenwick_tree</a>(T x) : <a class="code hl_variable" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#af9f543aa5976b8cc5422490b3d6250c6">n</a>(x) { <a class="code hl_variable" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#af7b7a8c1c5724ed8683d7e28bef526e6">bit</a>.assign(<a class="code hl_variable" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#af9f543aa5976b8cc5422490b3d6250c6">n</a> + 1, 0); }</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span></div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="foldopen" id="foldopen00075" data-start="{" data-end="}">
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"><a class="line" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#a19dea5e88bbd7683a719030623315de9"> 75</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#a19dea5e88bbd7683a719030623315de9">update</a>(T <span class="keywordtype">id</span>, T val) {</div>
@@ -161,7 +162,7 @@ $(function(){initNavTree('d6/d2e/fenwick__tree_8cpp_source.html','../../'); init
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> }</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> }</div>
</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> </div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span></div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="foldopen" id="foldopen00090" data-start="{" data-end="}">
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"><a class="line" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#a1fa0559d987fde0044761b17b35f5abd"> 90</a></span> <span class="keywordtype">int</span> <a class="code hl_function" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#a1fa0559d987fde0044761b17b35f5abd">sum</a>(T <span class="keywordtype">id</span>) {</div>
@@ -174,13 +175,13 @@ $(function(){initNavTree('d6/d2e/fenwick__tree_8cpp_source.html','../../'); init
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="keywordflow">return</span> res;</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> }</div>
</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> </div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span></div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"><a class="line" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#a0914a4b1401a7c427de91c92885724fe"> 106</a></span> <span class="keywordtype">int</span> <a class="code hl_function" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#a0914a4b1401a7c427de91c92885724fe">sum_range</a>(<span class="keywordtype">int</span> l, <span class="keywordtype">int</span> r) { <span class="keywordflow">return</span> <a class="code hl_function" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#a1fa0559d987fde0044761b17b35f5abd">sum</a>(r) - <a class="code hl_function" href="../../de/d0d/classrange__queries_1_1fenwick__tree.html#a1fa0559d987fde0044761b17b35f5abd">sum</a>(l - 1); }</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span>};</div>
</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span>} <span class="comment">// namespace range_queries</span></div>
</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> </div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span></div>
<div class="foldopen" id="foldopen00114" data-start="{" data-end="}">
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"><a class="line" href="../../d6/d2e/fenwick__tree_8cpp.html#a483bb8ccf42aaf7375a83e91490eda1e"> 114</a></span><span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code hl_function" href="../../d6/d2e/fenwick__tree_8cpp.html#a483bb8ccf42aaf7375a83e91490eda1e">tests</a>() {</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> std::vector&lt;int&gt; arr = {1, 2, 3, 4, 5};</div>
@@ -196,7 +197,7 @@ $(function(){initNavTree('d6/d2e/fenwick__tree_8cpp_source.html','../../'); init
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> std::cout &lt;&lt; <span class="stringliteral">&quot;All tests have successfully passed!\n&quot;</span>;</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span>}</div>
</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> </div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span></div>
<div class="foldopen" id="foldopen00132" data-start="{" data-end="}">
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"><a class="line" href="../../d6/d2e/fenwick__tree_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4"> 132</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="../../d6/d2e/fenwick__tree_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a>() {</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> <a class="code hl_function" href="../../d6/d2e/fenwick__tree_8cpp.html#a483bb8ccf42aaf7375a83e91490eda1e">tests</a>(); <span class="comment">// run self-test implementations</span></div>
@@ -221,7 +222,7 @@ $(function(){initNavTree('d6/d2e/fenwick__tree_8cpp_source.html','../../'); init
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
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<li class="navelem"><a class="el" href="../../dir_074119ce3a874b57120c49a0cc4bb5ad.html">range_queries</a></li><li class="navelem"><a class="el" href="../../d6/d2e/fenwick__tree_8cpp.html">fenwick_tree.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> 1.12.0 </li>
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