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<div class="headertitle"><div class="title">linear_probing Namespace Reference<div class="ingroups"><a class="el" href="../../d4/d39/group__open__addressing.html">Open Addressing</a></div></div></div>
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<p>An implementation of hash table using <a href="https://en.wikipedia.org/wiki/Linear_probing" target="_blank">linear probing</a> algorithm.
<a href="#details">More...</a></p>
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Classes</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d19/structlinear__probing_1_1_entry.html">Entry</a></td></tr>
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Functions</h2></td></tr>
<tr class="memitem:a75d779938df7ebc68581d922b60a2541" id="r_a75d779938df7ebc68581d922b60a2541"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a75d779938df7ebc68581d922b60a2541">putProber</a> (const <a class="el" href="../../db/d19/structlinear__probing_1_1_entry.html">Entry</a> &amp;entry, int key)</td></tr>
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<tr class="memitem:a942fc8407b8001890ea26830cdcd9d77" id="r_a942fc8407b8001890ea26830cdcd9d77"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a942fc8407b8001890ea26830cdcd9d77">searchingProber</a> (const <a class="el" href="../../db/d19/structlinear__probing_1_1_entry.html">Entry</a> &amp;entry, int key)</td></tr>
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<tr class="memitem:a16d34fd3511626a83ab00665d7bc34d1" id="r_a16d34fd3511626a83ab00665d7bc34d1"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a16d34fd3511626a83ab00665d7bc34d1">add</a> (int key)</td></tr>
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<tr class="memitem:a4bde7a47f98dd1ad24c84038e2608527" id="r_a4bde7a47f98dd1ad24c84038e2608527"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a4bde7a47f98dd1ad24c84038e2608527">hashFxn</a> (int key)</td></tr>
<tr class="memdesc:a4bde7a47f98dd1ad24c84038e2608527"><td class="mdescLeft">&#160;</td><td class="mdescRight">Hash a key. Uses the STL library's <code><a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/utility/hash.html">std::hash()</a></code> function. <br /></td></tr>
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<tr class="memitem:a6322209aaa91b7bbf16f96e1cc52b746" id="r_a6322209aaa91b7bbf16f96e1cc52b746"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a6322209aaa91b7bbf16f96e1cc52b746">linearProbe</a> (int key, bool searching)</td></tr>
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<tr class="memitem:ad87b71d810901fab69c4ad9d4d0fa635" id="r_ad87b71d810901fab69c4ad9d4d0fa635"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ad87b71d810901fab69c4ad9d4d0fa635">display</a> ()</td></tr>
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<tr class="memitem:a6a082dc1426a79f866cee6b370df37b0" id="r_a6a082dc1426a79f866cee6b370df37b0"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a6a082dc1426a79f866cee6b370df37b0">rehash</a> ()</td></tr>
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<tr class="memitem:abcf8d033f8115f39f3c93cfb6cee0b28" id="r_abcf8d033f8115f39f3c93cfb6cee0b28"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#abcf8d033f8115f39f3c93cfb6cee0b28">remove</a> (int key)</td></tr>
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Variables</h2></td></tr>
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int&#160;</td><td class="memItemRight" valign="bottom"><b>notPresent</b></td></tr>
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<a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a>&lt; <a class="el" href="../../db/d19/structlinear__probing_1_1_entry.html">Entry</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><b>table</b></td></tr>
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<tr class="memitem:a4fdb68db9f02ae4156e1845563004f8e" id="r_a4fdb68db9f02ae4156e1845563004f8e"><td class="memItemLeft" align="right" valign="top"><a id="a4fdb68db9f02ae4156e1845563004f8e" name="a4fdb68db9f02ae4156e1845563004f8e"></a>
int&#160;</td><td class="memItemRight" valign="bottom"><b>totalSize</b></td></tr>
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<tr class="memitem:a62fbd519adacd4e05706f34a7e551288" id="r_a62fbd519adacd4e05706f34a7e551288"><td class="memItemLeft" align="right" valign="top"><a id="a62fbd519adacd4e05706f34a7e551288" name="a62fbd519adacd4e05706f34a7e551288"></a>
int&#160;</td><td class="memItemRight" valign="bottom"><b>tomb</b> = -1</td></tr>
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int&#160;</td><td class="memItemRight" valign="bottom"><b>size</b></td></tr>
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<tr class="memitem:a5ff22c1a04290e24ef3ba3d6a3a06386" id="r_a5ff22c1a04290e24ef3ba3d6a3a06386"><td class="memItemLeft" align="right" valign="top"><a id="a5ff22c1a04290e24ef3ba3d6a3a06386" name="a5ff22c1a04290e24ef3ba3d6a3a06386"></a>
bool&#160;</td><td class="memItemRight" valign="bottom"><b>rehashing</b></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>An implementation of hash table using <a href="https://en.wikipedia.org/wiki/Linear_probing" target="_blank">linear probing</a> algorithm. </p>
</div><h2 class="groupheader">Function Documentation</h2>
<a id="a16d34fd3511626a83ab00665d7bc34d1" name="a16d34fd3511626a83ab00665d7bc34d1"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a16d34fd3511626a83ab00665d7bc34d1">&#9670;&#160;</a></span>add()</h2>
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<td class="memname">void linear_probing::add </td>
<td>(</td>
<td class="paramtype">int</td> <td class="paramname"><span class="paramname"><em>key</em></span></td><td>)</td>
<td></td>
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<p>Adds entry using linear probing. Checks for load factor here </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">key</td><td>key value to hash and add </td></tr>
</table>
</dd>
</dl>
<div class="fragment"><div class="line"><span class="lineno"> 161</span> {</div>
<div class="line"><span class="lineno"> 162</span> <span class="keywordtype">int</span> index = <a class="code hl_function" href="#a6322209aaa91b7bbf16f96e1cc52b746">linearProbe</a>(key, <span class="keyword">false</span>);</div>
<div class="line"><span class="lineno"> 163</span> table[index].key = key;</div>
<div class="line"><span class="lineno"> 164</span> <span class="comment">// Load factor greater than 0.5 causes resizing</span></div>
<div class="line"><span class="lineno"> 165</span> <span class="keywordflow">if</span> (++size / <span class="keyword">static_cast&lt;</span><span class="keywordtype">double</span><span class="keyword">&gt;</span>(totalSize) &gt;= 0.5) {</div>
<div class="line"><span class="lineno"> 166</span> rehash();</div>
<div class="line"><span class="lineno"> 167</span> }</div>
<div class="line"><span class="lineno"> 168</span>}</div>
<div class="ttc" id="anamespacelinear__probing_html_a6322209aaa91b7bbf16f96e1cc52b746"><div class="ttname"><a href="#a6322209aaa91b7bbf16f96e1cc52b746">linear_probing::linearProbe</a></div><div class="ttdeci">int linearProbe(int key, bool searching)</div><div class="ttdef"><b>Definition</b> linear_probing_hash_table.cpp:55</div></div>
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<h2 class="memtitle"><span class="permalink"><a href="#a16680b8a37d442c2f208faa286e33908">&#9670;&#160;</a></span>addInfo()</h2>
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<td class="memname">void linear_probing::addInfo </td>
<td>(</td>
<td class="paramtype">int</td> <td class="paramname"><span class="paramname"><em>key</em></span></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Information about the adding process </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">key</td><td>key value to hash and add </td></tr>
</table>
</dd>
</dl>
<div class="fragment"><div class="line"><span class="lineno"> 186</span> {</div>
<div class="line"><span class="lineno"> 187</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;Initial table: &quot;</span>;</div>
<div class="line"><span class="lineno"> 188</span> display();</div>
<div class="line"><span class="lineno"> 189</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 190</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;hash of &quot;</span> &lt;&lt; key &lt;&lt; <span class="stringliteral">&quot; is &quot;</span> &lt;&lt; hashFxn(key) &lt;&lt; <span class="stringliteral">&quot; % &quot;</span></div>
<div class="line"><span class="lineno"> 191</span> &lt;&lt; totalSize &lt;&lt; <span class="stringliteral">&quot; == &quot;</span> &lt;&lt; hashFxn(key) % totalSize;</div>
<div class="line"><span class="lineno"> 192</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 193</span> <a class="code hl_function" href="../../da/d41/uint128__t_8hpp.html#a3ff77262ffd6743df5b808d41382a6f3">add</a>(key);</div>
<div class="line"><span class="lineno"> 194</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;New table: &quot;</span>;</div>
<div class="line"><span class="lineno"> 195</span> display();</div>
<div class="line"><span class="lineno"> 196</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="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>
<div class="ttc" id="auint128__t_8hpp_html_a3ff77262ffd6743df5b808d41382a6f3"><div class="ttname"><a href="../../da/d41/uint128__t_8hpp.html#a3ff77262ffd6743df5b808d41382a6f3">add</a></div><div class="ttdeci">std::string add(const std::string &amp;first, const std::string &amp;second)</div><div class="ttdoc">Adding two string.</div><div class="ttdef"><b>Definition</b> uint128_t.hpp:37</div></div>
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<h2 class="memtitle"><span class="permalink"><a href="#ad87b71d810901fab69c4ad9d4d0fa635">&#9670;&#160;</a></span>display()</h2>
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<td class="memname">void linear_probing::display </td>
<td>(</td>
<td class="paramname"><span class="paramname"><em></em></span></td><td>)</td>
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<p>Function to displays the table </p><dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
<div class="fragment"><div class="line"><span class="lineno"> 120</span> {</div>
<div class="line"><span class="lineno"> 121</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; totalSize; i++) {</div>
<div class="line"><span class="lineno"> 122</span> <span class="keywordflow">if</span> (table[i].key == notPresent) {</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; Empty &quot;</span>;</div>
<div class="line"><span class="lineno"> 124</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (table[i].key == tomb) {</div>
<div class="line"><span class="lineno"> 125</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; Tomb &quot;</span>;</div>
<div class="line"><span class="lineno"> 126</span> } <span class="keywordflow">else</span> {</div>
<div class="line"><span class="lineno"> 127</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; &quot;</span>;</div>
<div class="line"><span class="lineno"> 128</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; table[i].key;</div>
<div class="line"><span class="lineno"> 129</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; &quot;</span>;</div>
<div class="line"><span class="lineno"> 130</span> }</div>
<div class="line"><span class="lineno"> 131</span> }</div>
<div class="line"><span class="lineno"> 132</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 133</span>}</div>
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<h2 class="memtitle"><span class="permalink"><a href="#a4bde7a47f98dd1ad24c84038e2608527">&#9670;&#160;</a></span>hashFxn()</h2>
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<td class="memname">size_t linear_probing::hashFxn </td>
<td>(</td>
<td class="paramtype">int</td> <td class="paramname"><span class="paramname"><em>key</em></span></td><td>)</td>
<td></td>
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<p>Hash a key. Uses the STL library's <code><a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/utility/hash.html">std::hash()</a></code> function. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">key</td><td>value to hash </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>hash value of the key </dd></dl>
<div class="fragment"><div class="line"><span class="lineno"> 46</span> {</div>
<div class="line"><span class="lineno"> 47</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/utility/hash.html">std::hash&lt;int&gt;</a> hash;</div>
<div class="line"><span class="lineno"> 48</span> <span class="keywordflow">return</span> hash(key);</div>
<div class="line"><span class="lineno"> 49</span>}</div>
<div class="ttc" id="ahash_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/utility/hash.html">std::hash</a></div></div>
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<h2 class="memtitle"><span class="permalink"><a href="#a6322209aaa91b7bbf16f96e1cc52b746">&#9670;&#160;</a></span>linearProbe()</h2>
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<td class="memname">int linear_probing::linearProbe </td>
<td>(</td>
<td class="paramtype">int</td> <td class="paramname"><span class="paramname"><em>key</em></span>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool</td> <td class="paramname"><span class="paramname"><em>searching</em></span>&#160;)</td>
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</table>
</div><div class="memdoc">
<p>Performs linear probing to resolve collisions </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">key</td><td>key value to hash </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>hash value of the key </dd></dl>
<div class="fragment"><div class="line"><span class="lineno"> 55</span> {</div>
<div class="line"><span class="lineno"> 56</span> <span class="keywordtype">int</span> hash = <span class="keyword">static_cast&lt;</span><span class="keywordtype">int</span><span class="keyword">&gt;</span>(hashFxn(key));</div>
<div class="line"><span class="lineno"> 57</span> <span class="keywordtype">int</span> i = 0;</div>
<div class="line"><span class="lineno"> 58</span> <a class="code hl_struct" href="../../db/d19/structlinear__probing_1_1_entry.html">Entry</a> entry;</div>
<div class="line"><span class="lineno"> 59</span> <span class="keywordflow">do</span> {</div>
<div class="line"><span class="lineno"> 60</span> <span class="keywordtype">int</span> index = <span class="keyword">static_cast&lt;</span><span class="keywordtype">int</span><span class="keyword">&gt;</span>((hash + i) % totalSize);</div>
<div class="line"><span class="lineno"> 61</span> entry = table[index];</div>
<div class="line"><span class="lineno"> 62</span> <span class="keywordflow">if</span> (searching) {</div>
<div class="line"><span class="lineno"> 63</span> <span class="keywordflow">if</span> (entry.<a class="code hl_variable" href="../../db/d19/structlinear__probing_1_1_entry.html#a4d84e90b73022083761f85f8586c4c2a">key</a> == notPresent) {</div>
<div class="line"><span class="lineno"> 64</span> <span class="keywordflow">return</span> notPresent;</div>
<div class="line"><span class="lineno"> 65</span> }</div>
<div class="line"><span class="lineno"> 66</span> <span class="keywordflow">if</span> (searchingProber(entry, key)) {</div>
<div class="line"><span class="lineno"> 67</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;Found key!&quot;</span> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 68</span> <span class="keywordflow">return</span> index;</div>
<div class="line"><span class="lineno"> 69</span> }</div>
<div class="line"><span class="lineno"> 70</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;Found tombstone or equal hash, checking next&quot;</span></div>
<div class="line"><span class="lineno"> 71</span> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 72</span> i++;</div>
<div class="line"><span class="lineno"> 73</span> } <span class="keywordflow">else</span> {</div>
<div class="line"><span class="lineno"> 74</span> <span class="keywordflow">if</span> (<a class="code hl_function" href="../../d0/d65/namespacedouble__hashing.html#ac2adfce49ac57f6dbd1778d2c1ce0d2b">putProber</a>(entry, key)) {</div>
<div class="line"><span class="lineno"> 75</span> <span class="keywordflow">if</span> (!rehashing) {</div>
<div class="line"><span class="lineno"> 76</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;Spot found!&quot;</span> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 77</span> }</div>
<div class="line"><span class="lineno"> 78</span> <span class="keywordflow">return</span> index;</div>
<div class="line"><span class="lineno"> 79</span> }</div>
<div class="line"><span class="lineno"> 80</span> <span class="keywordflow">if</span> (!rehashing) {</div>
<div class="line"><span class="lineno"> 81</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;Spot taken, looking at next&quot;</span> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 82</span> }</div>
<div class="line"><span class="lineno"> 83</span> i++;</div>
<div class="line"><span class="lineno"> 84</span> }</div>
<div class="line"><span class="lineno"> 85</span> <span class="keywordflow">if</span> (i == totalSize) {</div>
<div class="line"><span class="lineno"> 86</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;Linear probe failed&quot;</span> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 87</span> <span class="keywordflow">return</span> notPresent;</div>
<div class="line"><span class="lineno"> 88</span> }</div>
<div class="line"><span class="lineno"> 89</span> } <span class="keywordflow">while</span> (entry.<a class="code hl_variable" href="../../db/d19/structlinear__probing_1_1_entry.html#a4d84e90b73022083761f85f8586c4c2a">key</a> != notPresent);</div>
<div class="line"><span class="lineno"> 90</span> <span class="keywordflow">return</span> notPresent;</div>
<div class="line"><span class="lineno"> 91</span>}</div>
<div class="ttc" id="anamespacedouble__hashing_html_ac2adfce49ac57f6dbd1778d2c1ce0d2b"><div class="ttname"><a href="../../d0/d65/namespacedouble__hashing.html#ac2adfce49ac57f6dbd1778d2c1ce0d2b">double_hashing::putProber</a></div><div class="ttdeci">bool putProber(const Entry &amp;entry, int key)</div><div class="ttdef"><b>Definition</b> double_hash_hash_table.cpp:120</div></div>
<div class="ttc" id="astructlinear__probing_1_1_entry_html"><div class="ttname"><a href="../../db/d19/structlinear__probing_1_1_entry.html">linear_probing::Entry</a></div><div class="ttdef"><b>Definition</b> linear_probing_hash_table.cpp:35</div></div>
<div class="ttc" id="astructlinear__probing_1_1_entry_html_a4d84e90b73022083761f85f8586c4c2a"><div class="ttname"><a href="../../db/d19/structlinear__probing_1_1_entry.html#a4d84e90b73022083761f85f8586c4c2a">linear_probing::Entry::key</a></div><div class="ttdeci">int key</div><div class="ttdoc">key value</div><div class="ttdef"><b>Definition</b> linear_probing_hash_table.cpp:37</div></div>
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<h2 class="memtitle"><span class="permalink"><a href="#a75d779938df7ebc68581d922b60a2541">&#9670;&#160;</a></span>putProber()</h2>
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<td class="memname">bool linear_probing::putProber </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="../../db/d19/structlinear__probing_1_1_entry.html">Entry</a> &amp;</td> <td class="paramname"><span class="paramname"><em>entry</em></span>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int</td> <td class="paramname"><span class="paramname"><em>key</em></span>&#160;)</td>
</tr>
</table>
</div><div class="memdoc">
<p>Finds empty spot </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">entry</td><td>instance to check in </td></tr>
<tr><td class="paramname">key</td><td>key value to hash </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>hash value of the key </dd></dl>
<div class="fragment"><div class="line"><span class="lineno"> 98</span> {</div>
<div class="line"><span class="lineno"> 99</span> <span class="keywordflow">if</span> (entry.<a class="code hl_variable" href="../../db/d19/structlinear__probing_1_1_entry.html#a4d84e90b73022083761f85f8586c4c2a">key</a> == notPresent || entry.<a class="code hl_variable" href="../../db/d19/structlinear__probing_1_1_entry.html#a4d84e90b73022083761f85f8586c4c2a">key</a> == tomb) {</div>
<div class="line"><span class="lineno"> 100</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><span class="lineno"> 101</span> }</div>
<div class="line"><span class="lineno"> 102</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><span class="lineno"> 103</span>}</div>
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<h2 class="memtitle"><span class="permalink"><a href="#a6a082dc1426a79f866cee6b370df37b0">&#9670;&#160;</a></span>rehash()</h2>
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<td class="memname">void linear_probing::rehash </td>
<td>(</td>
<td class="paramname"><span class="paramname"><em></em></span></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Rehashes the table into a bigger table </p><dl class="section return"><dt>Returns</dt><dd>None </dd></dl>
<div class="fragment"><div class="line"><span class="lineno"> 138</span> {</div>
<div class="line"><span class="lineno"> 139</span> <span class="comment">// Necessary so wall of add info isn&#39;t printed all at once</span></div>
<div class="line"><span class="lineno"> 140</span> rehashing = <span class="keyword">true</span>;</div>
<div class="line"><span class="lineno"> 141</span> <span class="keywordtype">int</span> oldSize = totalSize;</div>
<div class="line"><span class="lineno"> 142</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;Entry&gt;</a> oldTable(table);</div>
<div class="line"><span class="lineno"> 143</span> <span class="comment">// Really this should use the next prime number greater than totalSize *</span></div>
<div class="line"><span class="lineno"> 144</span> <span class="comment">// 2</span></div>
<div class="line"><span class="lineno"> 145</span> totalSize *= 2;</div>
<div class="line"><span class="lineno"> 146</span> table = <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;Entry&gt;</a>(totalSize);</div>
<div class="line"><span class="lineno"> 147</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; oldSize; i++) {</div>
<div class="line"><span class="lineno"> 148</span> <span class="keywordflow">if</span> (oldTable[i].key != -1 &amp;&amp; oldTable[i].key != notPresent) {</div>
<div class="line"><span class="lineno"> 149</span> size--; <span class="comment">// Size stays the same (add increments size)</span></div>
<div class="line"><span class="lineno"> 150</span> <a class="code hl_function" href="../../da/d41/uint128__t_8hpp.html#a3ff77262ffd6743df5b808d41382a6f3">add</a>(oldTable[i].key);</div>
<div class="line"><span class="lineno"> 151</span> }</div>
<div class="line"><span class="lineno"> 152</span> }</div>
<div class="line"><span class="lineno"> 153</span> <span class="comment">// delete[] oldTable;</span></div>
<div class="line"><span class="lineno"> 154</span> rehashing = <span class="keyword">false</span>;</div>
<div class="line"><span class="lineno"> 155</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;Table was rehashed, new size is: &quot;</span> &lt;&lt; totalSize &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 156</span>}</div>
<div class="ttc" id="avector_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a></div></div>
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<h2 class="memtitle"><span class="permalink"><a href="#a75854f5aa216e61219154c62167ce8f0">&#9670;&#160;</a></span>removalInfo()</h2>
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<td class="memname">void linear_probing::removalInfo </td>
<td>(</td>
<td class="paramtype">int</td> <td class="paramname"><span class="paramname"><em>key</em></span></td><td>)</td>
<td></td>
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<p>Information about removal process </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">key</td><td>key value to hash and remove </td></tr>
</table>
</dd>
</dl>
<div class="fragment"><div class="line"><span class="lineno"> 201</span> {</div>
<div class="line"><span class="lineno"> 202</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;Initial table: &quot;</span>;</div>
<div class="line"><span class="lineno"> 203</span> display();</div>
<div class="line"><span class="lineno"> 204</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 205</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;hash of &quot;</span> &lt;&lt; key &lt;&lt; <span class="stringliteral">&quot; is &quot;</span> &lt;&lt; hashFxn(key) &lt;&lt; <span class="stringliteral">&quot; % &quot;</span></div>
<div class="line"><span class="lineno"> 206</span> &lt;&lt; totalSize &lt;&lt; <span class="stringliteral">&quot; == &quot;</span> &lt;&lt; hashFxn(key) % totalSize;</div>
<div class="line"><span class="lineno"> 207</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 208</span> remove(key);</div>
<div class="line"><span class="lineno"> 209</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;New table: &quot;</span>;</div>
<div class="line"><span class="lineno"> 210</span> display();</div>
<div class="line"><span class="lineno"> 211</span>}</div>
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<h2 class="memtitle"><span class="permalink"><a href="#abcf8d033f8115f39f3c93cfb6cee0b28">&#9670;&#160;</a></span>remove()</h2>
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<td class="memname">void linear_probing::remove </td>
<td>(</td>
<td class="paramtype">int</td> <td class="paramname"><span class="paramname"><em>key</em></span></td><td>)</td>
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<p>Removes key. Leaves tombstone upon removal. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">key</td><td>key value to hash and remove </td></tr>
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</dd>
</dl>
<div class="fragment"><div class="line"><span class="lineno"> 173</span> {</div>
<div class="line"><span class="lineno"> 174</span> <span class="keywordtype">int</span> index = <a class="code hl_function" href="#a6322209aaa91b7bbf16f96e1cc52b746">linearProbe</a>(key, <span class="keyword">true</span>);</div>
<div class="line"><span class="lineno"> 175</span> <span class="keywordflow">if</span> (index == notPresent) {</div>
<div class="line"><span class="lineno"> 176</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;key not found&quot;</span> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 177</span> }</div>
<div class="line"><span class="lineno"> 178</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;Removal Successful, leaving tomb&quot;</span> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 179</span> table[index].key = tomb;</div>
<div class="line"><span class="lineno"> 180</span> size--;</div>
<div class="line"><span class="lineno"> 181</span>}</div>
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<h2 class="memtitle"><span class="permalink"><a href="#a942fc8407b8001890ea26830cdcd9d77">&#9670;&#160;</a></span>searchingProber()</h2>
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<td class="memname">bool linear_probing::searchingProber </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="../../db/d19/structlinear__probing_1_1_entry.html">Entry</a> &amp;</td> <td class="paramname"><span class="paramname"><em>entry</em></span>, </td>
</tr>
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<td class="paramkey"></td>
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<td class="paramtype">int</td> <td class="paramname"><span class="paramname"><em>key</em></span>&#160;)</td>
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<p>Looks for a matching key </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">entry</td><td>instance to check in </td></tr>
<tr><td class="paramname">key</td><td>key value to hash </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>hash value of the key </dd></dl>
<div class="fragment"><div class="line"><span class="lineno"> 110</span> {</div>
<div class="line"><span class="lineno"> 111</span> <span class="keywordflow">if</span> (entry.<a class="code hl_variable" href="../../db/d19/structlinear__probing_1_1_entry.html#a4d84e90b73022083761f85f8586c4c2a">key</a> == key) {</div>
<div class="line"><span class="lineno"> 112</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><span class="lineno"> 113</span> }</div>
<div class="line"><span class="lineno"> 114</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><span class="lineno"> 115</span>}</div>
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