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<div class="section" id="is-heap">
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<h1>is_heap<a class="headerlink" href="#is-heap" title="Permalink to this headline">¶</a></h1>
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<div class="section" id="interface">
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<h2>Interface<a class="headerlink" href="#interface" title="Permalink to this headline">¶</a></h2>
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<div class="highlight-c++"><div class="highlight"><pre><span class="k">template</span><span class="o"><</span><span class="k">typename</span> <span class="n">RandomAccessIterator</span><span class="o">></span>
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<span class="kr">inline</span> <span class="n">SPROUT_CONSTEXPR</span> <span class="kt">bool</span>
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<span class="n">is_heap</span><span class="p">(</span><span class="n">RandomAccessIterator</span> <span class="n">first</span><span class="p">,</span> <span class="n">RandomAccessIterator</span> <span class="n">last</span><span class="p">);</span>
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<span class="k">template</span><span class="o"><</span><span class="k">typename</span> <span class="n">RandomAccessIterator</span><span class="p">,</span> <span class="k">typename</span> <span class="n">Compare</span><span class="o">></span>
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<span class="kr">inline</span> <span class="n">SPROUT_CONSTEXPR</span> <span class="kt">bool</span>
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<span class="n">is_heap</span><span class="p">(</span><span class="n">RandomAccessIterator</span> <span class="n">first</span><span class="p">,</span> <span class="n">RandomAccessIterator</span> <span class="n">last</span><span class="p">,</span> <span class="n">Compare</span> <span class="n">comp</span><span class="p">);</span>
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</pre></div>
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<div class="section" id="returns">
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<h2>Returns<a class="headerlink" href="#returns" title="Permalink to this headline">¶</a></h2>
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<div class="line-block">
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<div class="line"><tt class="docutils literal"><span class="pre">is_heap_until(first,</span> <span class="pre">last)</span> <span class="pre">==</span> <span class="pre">last</span></tt>, <tt class="docutils literal"><span class="pre">is_heap_until(first,</span> <span class="pre">last,</span> <span class="pre">comp)</span> <span class="pre">==</span> <span class="pre">last</span></tt></div>
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<div class="section" id="examples">
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<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
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<div class="highlight-c++"><div class="highlight"><pre><span class="cp">#include <sprout/algorithm/is_heap.hpp></span>
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<span class="cp">#include <sprout/array.hpp></span>
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<span class="cp">#include <sprout/container.hpp></span>
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<span class="k">using</span> <span class="k">namespace</span> <span class="n">sprout</span><span class="p">;</span>
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<span class="n">SPROUT_STATIC_CONSTEXPR</span> <span class="k">auto</span> <span class="n">input</span> <span class="o">=</span> <span class="n">array</span><span class="o"><</span><span class="kt">int</span><span class="p">,</span> <span class="mi">10</span><span class="o">></span><span class="p">{{</span><span class="mi">10</span><span class="p">,</span> <span class="mi">9</span><span class="p">,</span> <span class="mi">8</span><span class="p">,</span> <span class="mi">6</span><span class="p">,</span> <span class="mi">7</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">5</span><span class="p">,</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">4</span><span class="p">,</span> <span class="mi">1</span><span class="p">}};</span>
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<span class="n">SPROUT_STATIC_CONSTEXPR</span> <span class="k">auto</span> <span class="n">result</span> <span class="o">=</span> <span class="n">sprout</span><span class="o">::</span><span class="n">is_heap</span><span class="p">(</span><span class="n">begin</span><span class="p">(</span><span class="n">input</span><span class="p">),</span> <span class="n">end</span><span class="p">(</span><span class="n">input</span><span class="p">));</span>
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<span class="n">static_assert</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="s">"input is a heap."</span><span class="p">);</span>
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</pre></div>
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<div class="section" id="complexity">
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<h2>Complexity<a class="headerlink" href="#complexity" title="Permalink to this headline">¶</a></h2>
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<div class="line-block">
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<div class="line">Recursive function invocations in <em>O(logN)</em> (logarithmic) depth.</div>
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<div class="line-block">
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<div class="line"><tt class="docutils literal"><span class="pre">sprout/algorithm/is_heap.hpp</span></tt></div>
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<div class="line">Convenience header: <tt class="docutils literal"><span class="pre">sprout/algorithm.hpp</span></tt></div>
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<ul>
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<li><a class="reference external" href="#">is_heap</a><ul>
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<li><a class="reference external" href="#interface">Interface</a></li>
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<li><a class="reference external" href="#returns">Returns</a></li>
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<li><a class="reference external" href="#examples">Examples</a></li>
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<li><a class="reference external" href="#complexity">Complexity</a></li>
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