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<title>Algorithms_in_C++: data_structures/segment_tree.cpp File Reference</title>
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<div id="projectname">Algorithms_in_C++<span id="projectnumber">&#160;1.0.0</span>
<div id="projectname">TheAlgorithms/C++<span id="projectnumber">&#160;1.0.0</span>
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<div id="projectbrief">Set of algorithms implemented in C++.</div>
<div id="projectbrief">All the algorithms implemented in C++</div>
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@@ -123,7 +140,9 @@ Include dependency graph for segment_tree.cpp:</div>
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<p><a href="../../de/dd1/segment__tree_8cpp_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="nested-classes" name="nested-classes"></a>
Classes</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../dd/d95/classdata__structures_1_1_segment_tree.html">data_structures::SegmentTree&lt; T &gt;</a></td></tr>
@@ -150,6 +169,8 @@ Functions</h2></td></tr>
<p>Implementation of the segment tree data structre</p>
<p>Can do point updates (updates the value of some position) and range queries, where it gives the value of some associative opperation done on a range</p>
<p>Both of these operations take O(log N) time </p><dl class="section author"><dt>Author</dt><dd><a href="https://github.com/nishantc1527" target="_blank">Nishant Chatterjee</a> </dd></dl>
<p class="definition">Definition in file <a class="el" href="../../de/dd1/segment__tree_8cpp_source.html">segment_tree.cpp</a>.</p>
</div><h2 class="groupheader">Function Documentation</h2>
<a id="ae66f6b31b5ad750f1fe042a706a4e3d4" name="ae66f6b31b5ad750f1fe042a706a4e3d4"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae66f6b31b5ad750f1fe042a706a4e3d4">&#9670;&#160;</a></span>main()</h2>
@@ -168,17 +189,14 @@ Functions</h2></td></tr>
<p>Main function. </p>
<dl class="section return"><dt>Returns</dt><dd>0 on exit </dd></dl>
<p class="definition">Definition at line <a class="el" href="../../de/dd1/segment__tree_8cpp_source.html#l00130">130</a> of file <a class="el" href="../../de/dd1/segment__tree_8cpp_source.html">segment_tree.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 130</span> {</div>
<div class="line"><span class="lineno"> 131</span> <a class="code hl_function" href="#aa8dca7b867074164d5f45b0f3851269d">test</a>(); <span class="comment">// run self-test implementations</span></div>
<div class="line"><span class="lineno"> 132</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><span class="lineno"> 133</span>}</div>
<div class="ttc" id="asegment__tree_8cpp_html_aa8dca7b867074164d5f45b0f3851269d"><div class="ttname"><a href="#aa8dca7b867074164d5f45b0f3851269d">test</a></div><div class="ttdeci">static void test()</div><div class="ttdoc">Self-test implementations.</div><div class="ttdef"><b>Definition</b> segment_tree.cpp:112</div></div>
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<p>Self-test implementations. </p>
<dl class="section return"><dt>Returns</dt><dd>void </dd></dl>
<p class="definition">Definition at line <a class="el" href="../../de/dd1/segment__tree_8cpp_source.html#l00112">112</a> of file <a class="el" href="../../de/dd1/segment__tree_8cpp_source.html">segment_tree.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 112</span> {</div>
<div class="line"><span class="lineno"> 113</span> <a class="code hl_class" href="../../dd/d95/classdata__structures_1_1_segment_tree.html">data_structures::SegmentTree&lt;int&gt;</a> t(5);</div>
<div class="line"><span class="lineno"> 114</span> t.update(1, 1);</div>
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<div class="line"><span class="lineno"> 120</span> t.update(1, 3);</div>
<div class="line"><span class="lineno"> 121</span> assert(t.range_comb(1, 3) == 8); <span class="comment">// 3 + 2 + 3 = 8</span></div>
<div class="line"><span class="lineno"> 122</span> </div>
<div class="line"><span class="lineno"> 123</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;All tests have successfully passed!\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 123</span> std::cout &lt;&lt; <span class="stringliteral">&quot;All tests have successfully passed!\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 124</span>}</div>
<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>
<div class="ttc" id="aclassdata__structures_1_1_segment_tree_html"><div class="ttname"><a href="../../dd/d95/classdata__structures_1_1_segment_tree.html">data_structures::SegmentTree</a></div><div class="ttdoc">class representation of the segment tree</div><div class="ttdef"><b>Definition</b> segment_tree.cpp:30</div></div>
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