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<div class="contents">
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<p>Implementation of <a href="https://en.wikipedia.org/wiki/Trie" target="_blank">Trie</a> data structure using HashMap for different characters and method for predicting words based on prefix.
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<a href="#details">More...</a></p>
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<div class="textblock"><code>#include <cassert></code><br />
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<code>#include <iostream></code><br />
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<code>#include <memory></code><br />
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<code>#include <stack></code><br />
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<code>#include <unordered_map></code><br />
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<code>#include <vector></code><br />
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</div><div class="textblock"><div class="dynheader">
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Include dependency graph for trie_using_hashmap.cpp:</div>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 id="header-nested-classes" class="groupheader"><a id="nested-classes" name="nested-classes"></a>
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Classes</h2></td></tr>
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<tr class="memitem:data_5Fstructures_3A_3Atrie_5Fusing_5Fhashmap_3A_3ATrie" id="r_data_5Fstructures_3A_3Atrie_5Fusing_5Fhashmap_3A_3ATrie"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html">data_structures::trie_using_hashmap::Trie</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight"><a class="el" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html" title="Trie class, implementation of trie using hashmap in each trie node for all the characters of char16_t...">Trie</a> class, implementation of trie using hashmap in each trie node for all the characters of char16_t(UTF-16)type with methods to insert, delete, search, start with and to recommend words based on a given prefix. <a href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#details">More...</a><br /></td></tr>
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<tr class="memitem:data_5Fstructures_3A_3Atrie_5Fusing_5Fhashmap_3A_3ATrie_3A_3ANode" id="r_data_5Fstructures_3A_3Atrie_5Fusing_5Fhashmap_3A_3ATrie_3A_3ANode"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d12/structdata__structures_1_1trie__using__hashmap_1_1_trie_1_1_node.html">data_structures::trie_using_hashmap::Trie::Node</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">struct representing a trie node. <a href="../../d5/d12/structdata__structures_1_1trie__using__hashmap_1_1_trie_1_1_node.html#details">More...</a><br /></td></tr>
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</table><table class="memberdecls">
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Namespaces</h2></td></tr>
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<tr class="memitem:data_5Fstructures" id="r_data_5Fstructures"><td class="memItemLeft" align="right" valign="top">namespace  </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d3c/namespacedata__structures.html">data_structures</a></td></tr>
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<tr class="memdesc:d5/d3c/namespacedata__structures"><td class="mdescLeft"> </td><td class="mdescRight">for IO operations <br /></td></tr>
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<tr class="memitem:trie_5Fusing_5Fhashmap" id="r_trie_5Fusing_5Fhashmap"><td class="memItemLeft" align="right" valign="top">namespace  </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d0a/namespacetrie__using__hashmap.html">trie_using_hashmap</a></td></tr>
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<tr class="memdesc:d7/d0a/namespacetrie__using__hashmap"><td class="mdescLeft"> </td><td class="mdescRight">Functions for <a href="https://en.wikipedia.org/wiki/Trie" target="_blank">Trie</a> data structure using hashmap implementation. <br /></td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 id="header-func-members" class="groupheader"><a id="func-members" name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:aa8dca7b867074164d5f45b0f3851269d" id="r_aa8dca7b867074164d5f45b0f3851269d"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="#aa8dca7b867074164d5f45b0f3851269d">test</a> ()</td></tr>
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<tr class="memdesc:aa8dca7b867074164d5f45b0f3851269d"><td class="mdescLeft"> </td><td class="mdescRight">Self-test implementations. <br /></td></tr>
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<tr class="memitem:ae66f6b31b5ad750f1fe042a706a4e3d4" id="r_ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a> ()</td></tr>
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<tr class="memdesc:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="mdescLeft"> </td><td class="mdescRight">Main function. <br /></td></tr>
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</table>
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<a name="details" id="details"></a><h2 id="header-details" class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>Implementation of <a href="https://en.wikipedia.org/wiki/Trie" target="_blank">Trie</a> data structure using HashMap for different characters and method for predicting words based on prefix. </p>
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<dl class="section author"><dt>Author</dt><dd><a href="https://github.com/bharath000" target="_blank">Venkata Bharath</a></dd></dl>
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<p>The <a class="el" href="../../dd/d2f/class_trie.html">Trie</a> data structure is implemented using unordered map to use memory optimally, predict_words method is developed to recommend words based on a given prefix along with other methods insert, delete, search, startwith in trie. </p><dl class="section see"><dt>See also</dt><dd><a class="el" href="../../dc/d93/trie__modern_8cpp.html" title="A basic implementation of trie class to store only lower-case strings.">trie_modern.cpp</a> for difference </dd></dl>
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<p class="definition">Definition in file <a class="el" href="../../d5/d8a/trie__using__hashmap_8cpp_source.html">trie_using_hashmap.cpp</a>.</p>
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</div><a name="doc-func-members" id="doc-func-members"></a><h2 id="header-doc-func-members" class="groupheader">Function Documentation</h2>
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<a id="ae66f6b31b5ad750f1fe042a706a4e3d4" name="ae66f6b31b5ad750f1fe042a706a4e3d4"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ae66f6b31b5ad750f1fe042a706a4e3d4">◆ </a></span>main()</h2>
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<div class="memitem">
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<div class="memproto">
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<td class="memname">int main </td>
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<td>(</td>
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<td class="paramtype">void</td> <td class="paramname"><span class="paramname"><em></em></span></td><td>)</td>
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<td></td>
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<p>Main function. </p>
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<dl class="section return"><dt>Returns</dt><dd>0 on exit </dd></dl>
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<p class="definition">Definition at line <a class="el" href="../../d5/d8a/trie__using__hashmap_8cpp_source.html#l00342">342</a> of file <a class="el" href="../../d5/d8a/trie__using__hashmap_8cpp_source.html">trie_using_hashmap.cpp</a>.</p>
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<div class="fragment"><div class="line"><span class="lineno"> 342</span> {</div>
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<div class="line"><span class="lineno"> 343</span> <a class="code hl_function" href="#aa8dca7b867074164d5f45b0f3851269d">test</a>(); <span class="comment">// run self-test implementaions</span></div>
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<div class="line"><span class="lineno"> 344</span> <span class="keywordflow">return</span> 0;</div>
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<div class="line"><span class="lineno"> 345</span>}</div>
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<div class="ttc" id="atrie__using__hashmap_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> <a href="../../d5/d8a/trie__using__hashmap_8cpp_source.html#l00221">trie_using_hashmap.cpp:221</a></div></div>
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</div><!-- fragment -->
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</div>
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</div>
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<a id="aa8dca7b867074164d5f45b0f3851269d" name="aa8dca7b867074164d5f45b0f3851269d"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#aa8dca7b867074164d5f45b0f3851269d">◆ </a></span>test()</h2>
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<td class="memname">void test </td>
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<td>(</td>
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<td class="paramname"><span class="paramname"><em></em></span></td><td>)</td>
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<td></td>
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<td class="mlabels-right">
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<span class="mlabels"><span class="mlabel static">static</span></span> </td>
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</div><div class="memdoc">
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<p>Self-test implementations. </p>
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<dl class="section return"><dt>Returns</dt><dd>void </dd></dl>
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<p class="definition">Definition at line <a class="el" href="../../d5/d8a/trie__using__hashmap_8cpp_source.html#l00221">221</a> of file <a class="el" href="../../d5/d8a/trie__using__hashmap_8cpp_source.html">trie_using_hashmap.cpp</a>.</p>
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<div class="fragment"><div class="line"><span class="lineno"> 221</span> {</div>
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<div class="line"><span class="lineno"> 222</span> <a class="code hl_class" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html">data_structures::trie_using_hashmap::Trie</a> obj;</div>
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<div class="line"><span class="lineno"> 223</span> <span class="comment">// Inserting data into trie using the insert</span></div>
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<div class="line"><span class="lineno"> 224</span> <span class="comment">// method and testing it with search method</span></div>
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<div class="line"><span class="lineno"> 225</span> obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#abcae0a4456e7f583ce716e3ef466dfd2">insert</a>(<span class="stringliteral">"app"</span>);</div>
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<div class="line"><span class="lineno"> 226</span> obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#abcae0a4456e7f583ce716e3ef466dfd2">insert</a>(<span class="stringliteral">"abscond"</span>);</div>
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<div class="line"><span class="lineno"> 227</span> obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#abcae0a4456e7f583ce716e3ef466dfd2">insert</a>(<span class="stringliteral">"about"</span>);</div>
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<div class="line"><span class="lineno"> 228</span> obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#abcae0a4456e7f583ce716e3ef466dfd2">insert</a>(<span class="stringliteral">"apps"</span>);</div>
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<div class="line"><span class="lineno"> 229</span> obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#abcae0a4456e7f583ce716e3ef466dfd2">insert</a>(<span class="stringliteral">"apen"</span>);</div>
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<div class="line"><span class="lineno"> 230</span> obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#abcae0a4456e7f583ce716e3ef466dfd2">insert</a>(<span class="stringliteral">"apples"</span>);</div>
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<div class="line"><span class="lineno"> 231</span> obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#abcae0a4456e7f583ce716e3ef466dfd2">insert</a>(<span class="stringliteral">"apple"</span>);</div>
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<div class="line"><span class="lineno"> 232</span> obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#abcae0a4456e7f583ce716e3ef466dfd2">insert</a>(<span class="stringliteral">"approach"</span>);</div>
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<div class="line"><span class="lineno"> 233</span> obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#abcae0a4456e7f583ce716e3ef466dfd2">insert</a>(<span class="stringliteral">"bus"</span>);</div>
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<div class="line"><span class="lineno"> 234</span> obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#abcae0a4456e7f583ce716e3ef466dfd2">insert</a>(<span class="stringliteral">"buses"</span>);</div>
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<div class="line"><span class="lineno"> 235</span> obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#abcae0a4456e7f583ce716e3ef466dfd2">insert</a>(<span class="stringliteral">"Apple"</span>);</div>
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<div class="line"><span class="lineno"> 236</span> obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#abcae0a4456e7f583ce716e3ef466dfd2">insert</a>(<span class="stringliteral">"Bounce"</span>);</div>
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<div class="line"><span class="lineno"> 237</span> </div>
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<div class="line"><span class="lineno"> 238</span> assert(!obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ad71eb24207c28b546631802dba97310f">search</a>(<span class="stringliteral">"appy"</span>));</div>
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<div class="line"><span class="lineno"> 239</span> std::cout << <span class="stringliteral">"appy is not a word in trie"</span> << std::endl;</div>
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<div class="line"><span class="lineno"> 240</span> </div>
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<div class="line"><span class="lineno"> 241</span> assert(!obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ad71eb24207c28b546631802dba97310f">search</a>(<span class="stringliteral">"car"</span>));</div>
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<div class="line"><span class="lineno"> 242</span> std::cout << <span class="stringliteral">"car is not a word in trie"</span> << std::endl;</div>
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<div class="line"><span class="lineno"> 243</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ad71eb24207c28b546631802dba97310f">search</a>(<span class="stringliteral">"app"</span>));</div>
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<div class="line"><span class="lineno"> 244</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ad71eb24207c28b546631802dba97310f">search</a>(<span class="stringliteral">"apple"</span>));</div>
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<div class="line"><span class="lineno"> 245</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ad71eb24207c28b546631802dba97310f">search</a>(<span class="stringliteral">"apples"</span>));</div>
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<div class="line"><span class="lineno"> 246</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ad71eb24207c28b546631802dba97310f">search</a>(<span class="stringliteral">"apps"</span>));</div>
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<div class="line"><span class="lineno"> 247</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ad71eb24207c28b546631802dba97310f">search</a>(<span class="stringliteral">"apen"</span>));</div>
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<div class="line"><span class="lineno"> 248</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ad71eb24207c28b546631802dba97310f">search</a>(<span class="stringliteral">"approach"</span>));</div>
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<div class="line"><span class="lineno"> 249</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ad71eb24207c28b546631802dba97310f">search</a>(<span class="stringliteral">"about"</span>));</div>
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<div class="line"><span class="lineno"> 250</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ad71eb24207c28b546631802dba97310f">search</a>(<span class="stringliteral">"abscond"</span>));</div>
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<div class="line"><span class="lineno"> 251</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ad71eb24207c28b546631802dba97310f">search</a>(<span class="stringliteral">"bus"</span>));</div>
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<div class="line"><span class="lineno"> 252</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ad71eb24207c28b546631802dba97310f">search</a>(<span class="stringliteral">"buses"</span>));</div>
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<div class="line"><span class="lineno"> 253</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ad71eb24207c28b546631802dba97310f">search</a>(<span class="stringliteral">"Bounce"</span>));</div>
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<div class="line"><span class="lineno"> 254</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ad71eb24207c28b546631802dba97310f">search</a>(<span class="stringliteral">"Apple"</span>));</div>
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<div class="line"><span class="lineno"> 255</span> </div>
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<div class="line"><span class="lineno"> 256</span> std::cout << <span class="stringliteral">"All the Inserted words are present in the trie"</span> << std::endl;</div>
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<div class="line"><span class="lineno"> 257</span> </div>
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<div class="line"><span class="lineno"> 258</span> <span class="comment">// test for startwith prefix method</span></div>
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<div class="line"><span class="lineno"> 259</span> assert(!obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">startwith</a>(<span class="stringliteral">"approachs"</span>));</div>
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<div class="line"><span class="lineno"> 260</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">startwith</a>(<span class="stringliteral">"approach"</span>));</div>
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<div class="line"><span class="lineno"> 261</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">startwith</a>(<span class="stringliteral">"about"</span>));</div>
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<div class="line"><span class="lineno"> 262</span> assert(!obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">startwith</a>(<span class="stringliteral">"appy"</span>));</div>
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<div class="line"><span class="lineno"> 263</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">startwith</a>(<span class="stringliteral">"abscond"</span>));</div>
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<div class="line"><span class="lineno"> 264</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">startwith</a>(<span class="stringliteral">"bus"</span>));</div>
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<div class="line"><span class="lineno"> 265</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">startwith</a>(<span class="stringliteral">"buses"</span>));</div>
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<div class="line"><span class="lineno"> 266</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">startwith</a>(<span class="stringliteral">"Bounce"</span>));</div>
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<div class="line"><span class="lineno"> 267</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">startwith</a>(<span class="stringliteral">"Apple"</span>));</div>
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<div class="line"><span class="lineno"> 268</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">startwith</a>(<span class="stringliteral">"abs"</span>));</div>
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<div class="line"><span class="lineno"> 269</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">startwith</a>(<span class="stringliteral">"b"</span>));</div>
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<div class="line"><span class="lineno"> 270</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">startwith</a>(<span class="stringliteral">"bus"</span>));</div>
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<div class="line"><span class="lineno"> 271</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">startwith</a>(<span class="stringliteral">"Bo"</span>));</div>
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<div class="line"><span class="lineno"> 272</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">startwith</a>(<span class="stringliteral">"A"</span>));</div>
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<div class="line"><span class="lineno"> 273</span> assert(!obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">startwith</a>(<span class="stringliteral">"Ca"</span>));</div>
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<div class="line"><span class="lineno"> 274</span> </div>
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<div class="line"><span class="lineno"> 275</span> assert(!obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">startwith</a>(<span class="stringliteral">"C"</span>));</div>
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<div class="line"><span class="lineno"> 276</span> </div>
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<div class="line"><span class="lineno"> 277</span> std::cout << <span class="stringliteral">"All the tests passed for startwith method"</span> << std::endl;</div>
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<div class="line"><span class="lineno"> 278</span> </div>
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<div class="line"><span class="lineno"> 279</span> <span class="comment">// test for predict_words/recommendation of words based on a given prefix</span></div>
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<div class="line"><span class="lineno"> 280</span> </div>
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<div class="line"><span class="lineno"> 281</span> std::vector<std::string> pred_words = obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ae15fdc7f2b5023992d87a711d78566c4">predict_words</a>(<span class="stringliteral">"a"</span>);</div>
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<div class="line"><span class="lineno"> 282</span> </div>
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<div class="line"><span class="lineno"> 283</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> std::string& str : obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ae15fdc7f2b5023992d87a711d78566c4">predict_words</a>(<span class="stringliteral">"a"</span>)) {</div>
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<div class="line"><span class="lineno"> 284</span> std::cout << str << std::endl;</div>
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<div class="line"><span class="lineno"> 285</span> }</div>
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<div class="line"><span class="lineno"> 286</span> assert(pred_words.size() == 8);</div>
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<div class="line"><span class="lineno"> 287</span> std::cout << <span class="stringliteral">"Returned all words that start with prefix a "</span> << std::endl;</div>
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<div class="line"><span class="lineno"> 288</span> pred_words = obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ae15fdc7f2b5023992d87a711d78566c4">predict_words</a>(<span class="stringliteral">"app"</span>);</div>
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<div class="line"><span class="lineno"> 289</span> </div>
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<div class="line"><span class="lineno"> 290</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> std::string& str : pred_words) {</div>
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<div class="line"><span class="lineno"> 291</span> std::cout << str << std::endl;</div>
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<div class="line"><span class="lineno"> 292</span> }</div>
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<div class="line"><span class="lineno"> 293</span> </div>
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<div class="line"><span class="lineno"> 294</span> assert(pred_words.size() == 5);</div>
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<div class="line"><span class="lineno"> 295</span> std::cout << <span class="stringliteral">"Returned all words that start with prefix app "</span> << std::endl;</div>
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<div class="line"><span class="lineno"> 296</span> pred_words = obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ae15fdc7f2b5023992d87a711d78566c4">predict_words</a>(<span class="stringliteral">"A"</span>);</div>
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<div class="line"><span class="lineno"> 297</span> </div>
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<div class="line"><span class="lineno"> 298</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> std::string& str : pred_words) {</div>
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<div class="line"><span class="lineno"> 299</span> std::cout << str << std::endl;</div>
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<div class="line"><span class="lineno"> 300</span> }</div>
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<div class="line"><span class="lineno"> 301</span> </div>
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<div class="line"><span class="lineno"> 302</span> assert(pred_words.size() == 1);</div>
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<div class="line"><span class="lineno"> 303</span> std::cout << <span class="stringliteral">"Returned all words that start with prefix A "</span> << std::endl;</div>
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<div class="line"><span class="lineno"> 304</span> pred_words = obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ae15fdc7f2b5023992d87a711d78566c4">predict_words</a>(<span class="stringliteral">"bu"</span>);</div>
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<div class="line"><span class="lineno"> 305</span> </div>
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<div class="line"><span class="lineno"> 306</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> std::string& str : pred_words) {</div>
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<div class="line"><span class="lineno"> 307</span> std::cout << str << std::endl;</div>
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<div class="line"><span class="lineno"> 308</span> }</div>
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<div class="line"><span class="lineno"> 309</span> </div>
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<div class="line"><span class="lineno"> 310</span> assert(pred_words.size() == 2);</div>
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<div class="line"><span class="lineno"> 311</span> std::cout << <span class="stringliteral">"Returned all words that start with prefix bu "</span> << std::endl;</div>
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<div class="line"><span class="lineno"> 312</span> </div>
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<div class="line"><span class="lineno"> 313</span> <span class="comment">// tests for delete method</span></div>
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<div class="line"><span class="lineno"> 314</span> </div>
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<div class="line"><span class="lineno"> 315</span> obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ac0bf3d6791cba144b3f539835d835e75">delete_word</a>(<span class="stringliteral">"app"</span>);</div>
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<div class="line"><span class="lineno"> 316</span> assert(!obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ad71eb24207c28b546631802dba97310f">search</a>(<span class="stringliteral">"app"</span>));</div>
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<div class="line"><span class="lineno"> 317</span> std::cout << <span class="stringliteral">"word app is deleted sucessful"</span> << std::endl;</div>
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<div class="line"><span class="lineno"> 318</span> </div>
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<div class="line"><span class="lineno"> 319</span> pred_words = obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ae15fdc7f2b5023992d87a711d78566c4">predict_words</a>(<span class="stringliteral">"app"</span>);</div>
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<div class="line"><span class="lineno"> 320</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> std::string& str : pred_words) {</div>
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<div class="line"><span class="lineno"> 321</span> std::cout << str << std::endl;</div>
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<div class="line"><span class="lineno"> 322</span> }</div>
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<div class="line"><span class="lineno"> 323</span> assert(pred_words.size() == 4);</div>
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<div class="line"><span class="lineno"> 324</span> std::cout << <span class="stringliteral">"app is deleted sucessful"</span> << std::endl;</div>
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<div class="line"><span class="lineno"> 325</span> </div>
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<div class="line"><span class="lineno"> 326</span> <span class="comment">// test case for Chinese language</span></div>
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<div class="line"><span class="lineno"> 327</span> </div>
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<div class="line"><span class="lineno"> 328</span> obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#abcae0a4456e7f583ce716e3ef466dfd2">insert</a>(<span class="stringliteral">"苹果"</span>);</div>
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<div class="line"><span class="lineno"> 329</span> assert(obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">startwith</a>(<span class="stringliteral">"苹"</span>));</div>
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<div class="line"><span class="lineno"> 330</span> pred_words = obj.<a class="code hl_function" href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ae15fdc7f2b5023992d87a711d78566c4">predict_words</a>(<span class="stringliteral">"h"</span>);</div>
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<div class="line"><span class="lineno"> 331</span> </div>
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<div class="line"><span class="lineno"> 332</span> assert(pred_words.size() == 0);</div>
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<div class="line"><span class="lineno"> 333</span> std::cout << <span class="stringliteral">"No word starts with prefix h in trie"</span> << std::endl;</div>
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<div class="line"><span class="lineno"> 334</span> </div>
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<div class="line"><span class="lineno"> 335</span> std::cout << <span class="stringliteral">"All tests passed"</span> << std::endl;</div>
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<div class="line"><span class="lineno"> 336</span>}</div>
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<div class="ttc" id="aclassdata__structures_1_1trie__using__hashmap_1_1_trie_html"><div class="ttname"><a href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html">data_structures::trie_using_hashmap::Trie</a></div><div class="ttdoc">Trie class, implementation of trie using hashmap in each trie node for all the characters of char16_t...</div><div class="ttdef"><b>Definition</b> <a href="../../d5/d8a/trie__using__hashmap_8cpp_source.html#l00039">trie_using_hashmap.cpp:39</a></div></div>
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<div class="ttc" id="aclassdata__structures_1_1trie__using__hashmap_1_1_trie_html_abcae0a4456e7f583ce716e3ef466dfd2"><div class="ttname"><a href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#abcae0a4456e7f583ce716e3ef466dfd2">data_structures::trie_using_hashmap::Trie::insert</a></div><div class="ttdeci">void insert(const std::string &word)</div><div class="ttdoc">insert the string into the trie</div><div class="ttdef"><b>Definition</b> <a href="../../d5/d8a/trie__using__hashmap_8cpp_source.html#l00062">trie_using_hashmap.cpp:62</a></div></div>
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<div class="ttc" id="aclassdata__structures_1_1trie__using__hashmap_1_1_trie_html_ac0bf3d6791cba144b3f539835d835e75"><div class="ttname"><a href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ac0bf3d6791cba144b3f539835d835e75">data_structures::trie_using_hashmap::Trie::delete_word</a></div><div class="ttdeci">void delete_word(std::string word)</div><div class="ttdoc">delete a word/string from a trie</div><div class="ttdef"><b>Definition</b> <a href="../../d5/d8a/trie__using__hashmap_8cpp_source.html#l00122">trie_using_hashmap.cpp:122</a></div></div>
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<div class="ttc" id="aclassdata__structures_1_1trie__using__hashmap_1_1_trie_html_ad71eb24207c28b546631802dba97310f"><div class="ttname"><a href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ad71eb24207c28b546631802dba97310f">data_structures::trie_using_hashmap::Trie::search</a></div><div class="ttdeci">bool search(const std::string &word)</div><div class="ttdoc">search a word/string inside the trie</div><div class="ttdef"><b>Definition</b> <a href="../../d5/d8a/trie__using__hashmap_8cpp_source.html#l00082">trie_using_hashmap.cpp:82</a></div></div>
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<div class="ttc" id="aclassdata__structures_1_1trie__using__hashmap_1_1_trie_html_ae15fdc7f2b5023992d87a711d78566c4"><div class="ttname"><a href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#ae15fdc7f2b5023992d87a711d78566c4">data_structures::trie_using_hashmap::Trie::predict_words</a></div><div class="ttdeci">std::vector< std::string > predict_words(const std::string &prefix)</div><div class="ttdoc">predict/recommend a word that starts with a given prefix</div><div class="ttdef"><b>Definition</b> <a href="../../d5/d8a/trie__using__hashmap_8cpp_source.html#l00188">trie_using_hashmap.cpp:188</a></div></div>
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<div class="ttc" id="aclassdata__structures_1_1trie__using__hashmap_1_1_trie_html_af3aee573fbabd2c1510c0f74f842dd17"><div class="ttname"><a href="../../d3/d26/classdata__structures_1_1trie__using__hashmap_1_1_trie.html#af3aee573fbabd2c1510c0f74f842dd17">data_structures::trie_using_hashmap::Trie::startwith</a></div><div class="ttdeci">bool startwith(const std::string &prefix)</div><div class="ttdoc">search a word/string that starts with a given prefix</div><div class="ttdef"><b>Definition</b> <a href="../../d5/d8a/trie__using__hashmap_8cpp_source.html#l00107">trie_using_hashmap.cpp:107</a></div></div>
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