@@ -81781,7 +81781,7 @@ <h2 id="_2">解法</h2>
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<!-- solution:start -->
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<h3 id="_3">方法一</h3>
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- <div class="tabbed-set tabbed-alternate" data-tabs="1:4 "><input checked="checked" id="__tabbed_1_1" name="__tabbed_1" type="radio" /><input id="__tabbed_1_2" name="__tabbed_1" type="radio" /><input id="__tabbed_1_3" name="__tabbed_1" type="radio" /><input id="__tabbed_1_4" name="__tabbed_1" type="radio" /><div class="tabbed-labels"><label for="__tabbed_1_1">Python3</label><label for="__tabbed_1_2">Java</label><label for="__tabbed_1_3">C++</label><label for="__tabbed_1_4">Go</label></div>
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+ <div class="tabbed-set tabbed-alternate" data-tabs="1:5 "><input checked="checked" id="__tabbed_1_1" name="__tabbed_1" type="radio" /><input id="__tabbed_1_2" name="__tabbed_1" type="radio" /><input id="__tabbed_1_3" name="__tabbed_1" type="radio" /><input id="__tabbed_1_4" name="__tabbed_1" type="radio" /><input id="__tabbed_1_5" name="__tabbed_1" type="radio" />< div class="tabbed-labels"><label for="__tabbed_1_1">Python3</label><label for="__tabbed_1_2">Java</label><label for="__tabbed_1_3">C++</label><label for="__tabbed_1_4">Go</label><label for="__tabbed_1_5">Swift </label></div>
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<div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal"> 1</span>
@@ -82027,6 +82027,74 @@ <h3 id="_3">方法一</h3>
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<span class="cm"> */</span>
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</code></pre></div></td></tr></table></div>
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</div>
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+ <div class="tabbed-block">
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+ <div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal"> 1</span>
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+ <span class="normal"> 2</span>
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+ <span class="normal"> 5</span>
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+ <span class="normal"> 8</span>
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+ <span class="normal"> 9</span>
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+ <span class="normal">10</span>
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+ <span class="normal">11</span>
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+ <span class="normal">14</span>
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+ <span class="normal">15</span>
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+ <span class="normal">30</span>
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+ <span class="normal">31</span>
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+ <span class="normal">32</span>
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+ <span class="normal">33</span></pre></div></td><td class="code"><div><pre><span></span><code><span class="kd">class</span> <span class="nc">Solution</span> <span class="p">{</span>
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+ <span class="kd">private</span> <span class="kd">var</span> <span class="nv">presum</span><span class="p">:</span> <span class="p">[</span><span class="nb">Int</span><span class="p">]</span>
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+
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+ <span class="kd">init</span><span class="p">(</span><span class="kc">_</span> <span class="n">w</span><span class="p">:</span> <span class="p">[</span><span class="nb">Int</span><span class="p">])</span> <span class="p">{</span>
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+ <span class="kd">let</span> <span class="nv">n</span> <span class="p">=</span> <span class="n">w</span><span class="p">.</span><span class="bp">count</span>
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+ <span class="n">presum</span> <span class="p">=</span> <span class="p">[</span><span class="nb">Int</span><span class="p">](</span><span class="n">repeating</span><span class="p">:</span> <span class="mi">0</span><span class="p">,</span> <span class="bp">count</span><span class="p">:</span> <span class="n">n</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span>
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+ <span class="k">for</span> <span class="n">i</span> <span class="k">in</span> <span class="mf">0.</span><span class="p">.<</span><span class="n">n</span> <span class="p">{</span>
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+ <span class="n">presum</span><span class="p">[</span><span class="n">i</span> <span class="o">+</span> <span class="mi">1</span><span class="p">]</span> <span class="p">=</span> <span class="n">presum</span><span class="p">[</span><span class="n">i</span><span class="p">]</span> <span class="o">+</span> <span class="n">w</span><span class="p">[</span><span class="n">i</span><span class="p">]</span>
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+ <span class="p">}</span>
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+ <span class="p">}</span>
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+
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+ <span class="kd">func</span> <span class="nf">pickIndex</span><span class="p">()</span> <span class="p">-></span> <span class="nb">Int</span> <span class="p">{</span>
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+ <span class="kd">let</span> <span class="nv">n</span> <span class="p">=</span> <span class="n">presum</span><span class="p">.</span><span class="bp">count</span>
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+ <span class="kd">let</span> <span class="nv">x</span> <span class="p">=</span> <span class="nb">Int</span><span class="p">.</span><span class="n">random</span><span class="p">(</span><span class="k">in</span><span class="p">:</span> <span class="mf">1.</span><span class="p">..</span><span class="n">presum</span><span class="p">[</span><span class="n">n</span> <span class="o">-</span> <span class="mi">1</span><span class="p">])</span>
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+ <span class="kd">var</span> <span class="nv">left</span> <span class="p">=</span> <span class="mi">0</span>
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+ <span class="kd">var</span> <span class="nv">right</span> <span class="p">=</span> <span class="n">n</span> <span class="o">-</span> <span class="mi">2</span>
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+ <span class="k">while</span> <span class="kr">left</span> <span class="o"><</span> <span class="kr">right</span> <span class="p">{</span>
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+ <span class="kd">let</span> <span class="nv">mid</span> <span class="p">=</span> <span class="p">(</span><span class="kr">left</span> <span class="o">+</span> <span class="kr">right</span><span class="p">)</span> <span class="o">>></span> <span class="mi">1</span>
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+ <span class="k">if</span> <span class="n">presum</span><span class="p">[</span><span class="n">mid</span> <span class="o">+</span> <span class="mi">1</span><span class="p">]</span> <span class="o">>=</span> <span class="n">x</span> <span class="p">{</span>
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+ <span class="kr">right</span> <span class="p">=</span> <span class="n">mid</span>
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+ <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
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+ <span class="kr">left</span> <span class="p">=</span> <span class="n">mid</span> <span class="o">+</span> <span class="mi">1</span>
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+ <span class="p">}</span>
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+ <span class="p">}</span>
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+ <span class="k">return</span> <span class="kr">left</span>
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+ <span class="p">}</span>
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+ <span class="p">}</span>
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+ <span class="cm">/**</span>
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+ <span class="cm"> * Your Solution object will be instantiated and called as such:</span>
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+ <span class="cm"> * let w = [1]</span>
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+ <span class="cm"> * let solution = Solution(w)</span>
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+ <span class="cm"> * solution.pickIndex()</span>
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+ <span class="cm"> */</span>
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+ </code></pre></div></td></tr></table></div>
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+ </div>
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</div>
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<!-- solution:end -->
@@ -82060,6 +82128,11 @@ <h3 id="_3">方法一</h3>
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<nav>
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+ <a href="https://github.com/klever34" class="md-author" title="@klever34">
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+
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+ <img src="https://avatars.githubusercontent.com/u/12745225?v=4&size=72" alt="klever34">
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+ </a>
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+
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<a href="https://github.com/yanglbme" class="md-author" title="@yanglbme">
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<img src="https://avatars.githubusercontent.com/u/21008209?v=4&size=72" alt="yanglbme">
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