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<div class="headertitle"><div class="title">minimax.cpp</div></div>
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<a href="../../df/dfb/minimax_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>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include <algorithm></span> </div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#include <array></span> </div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include <cmath></span> </div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include <iostream></span> </div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span></div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="keyword">namespace </span><a class="code hl_namespace" href="../../db/dc0/namespacebacktracking.html">backtracking</a> {</div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="keyword">template</span> <<span class="keywordtype">size_t</span> T></div>
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<div class="foldopen" id="foldopen00039" data-start="{" data-end="}">
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"><a class="line" href="../../db/dc0/namespacebacktracking.html#a78540bcb5ef3473b2348cbc34748ec50"> 39</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="../../db/dc0/namespacebacktracking.html#a78540bcb5ef3473b2348cbc34748ec50">minimax</a>(<span class="keywordtype">int</span> depth, <span class="keywordtype">int</span> node_index, <span class="keywordtype">bool</span> is_max,</div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">const</span> std::array<int, T> &scores, <span class="keywordtype">double</span> <a class="code hl_function" href="../../d8/dee/avltree_8cpp.html#ae4a66d8b0c2b0d626aea45977e358c83">height</a>) {</div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> <span class="keywordflow">if</span> (depth == <a class="code hl_function" href="../../d8/dee/avltree_8cpp.html#ae4a66d8b0c2b0d626aea45977e358c83">height</a>) {</div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <span class="keywordflow">return</span> scores[node_index];</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> }</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> </div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="keywordtype">int</span> v1 = <a class="code hl_function" href="../../db/dc0/namespacebacktracking.html#a78540bcb5ef3473b2348cbc34748ec50">minimax</a>(depth + 1, node_index * 2, !is_max, scores, <a class="code hl_function" href="../../d8/dee/avltree_8cpp.html#ae4a66d8b0c2b0d626aea45977e358c83">height</a>);</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="keywordtype">int</span> v2 = <a class="code hl_function" href="../../db/dc0/namespacebacktracking.html#a78540bcb5ef3473b2348cbc34748ec50">minimax</a>(depth + 1, node_index * 2 + 1, !is_max, scores, <a class="code hl_function" href="../../d8/dee/avltree_8cpp.html#ae4a66d8b0c2b0d626aea45977e358c83">height</a>);</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> </div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keywordflow">return</span> is_max ? std::max(v1, v2) : std::min(v1, v2);</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span>}</div>
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</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span>} <span class="comment">// namespace backtracking</span></div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span></div>
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<div class="foldopen" id="foldopen00056" data-start="{" data-end="}">
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"><a class="line" href="../../df/dfb/minimax_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4"> 56</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="../../df/dfb/minimax_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a>() {</div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> std::array<int, 8> scores = {90, 23, 6, 33, 21, 65, 123, 34423};</div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="keywordtype">double</span> <a class="code hl_function" href="../../d8/dee/avltree_8cpp.html#ae4a66d8b0c2b0d626aea45977e358c83">height</a> = log2(scores.size());</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> </div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> std::cout << <span class="stringliteral">"Optimal value: "</span></div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> << <a class="code hl_function" href="../../db/dc0/namespacebacktracking.html#a78540bcb5ef3473b2348cbc34748ec50">backtracking::minimax</a>(0, 0, <span class="keyword">true</span>, scores, <a class="code hl_function" href="../../d8/dee/avltree_8cpp.html#ae4a66d8b0c2b0d626aea45977e358c83">height</a>) << std::endl;</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span>}</div>
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</div>
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<div class="ttc" id="aavltree_8cpp_html_ae4a66d8b0c2b0d626aea45977e358c83"><div class="ttname"><a href="../../d8/dee/avltree_8cpp.html#ae4a66d8b0c2b0d626aea45977e358c83">height</a></div><div class="ttdeci">int height(node *root)</div><div class="ttdef"><b>Definition</b> <a href="../../d8/dee/avltree_8cpp_source.html#l00038">avltree.cpp:38</a></div></div>
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<div class="ttc" id="aminimax_8cpp_html_ae66f6b31b5ad750f1fe042a706a4e3d4"><div class="ttname"><a href="../../df/dfb/minimax_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a></div><div class="ttdeci">int main()</div><div class="ttdoc">Main function.</div><div class="ttdef"><b>Definition</b> <a href="#l00056">minimax.cpp:56</a></div></div>
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<div class="ttc" id="anamespacebacktracking_html"><div class="ttname"><a href="../../db/dc0/namespacebacktracking.html">backtracking</a></div><div class="ttdoc">for vector container</div></div>
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<div class="ttc" id="anamespacebacktracking_html_a78540bcb5ef3473b2348cbc34748ec50"><div class="ttname"><a href="../../db/dc0/namespacebacktracking.html#a78540bcb5ef3473b2348cbc34748ec50">backtracking::minimax</a></div><div class="ttdeci">int minimax(int depth, int node_index, bool is_max, const std::array< int, T > &scores, double height)</div><div class="ttdoc">Check which is the maximum/minimum number in the array.</div><div class="ttdef"><b>Definition</b> <a href="#l00039">minimax.cpp:39</a></div></div>
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