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<h1 class="post-title" itemprop="name headline">ARTS-第四周</h1>
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<p>A:
<a href="https://leetcode.com/problems/swap-nodes-in-pairs/" target="_blank" rel="external nofollow noopener noreferrer">Swap Nodes in Pairs</a>
</p>
<p>R:
<a href="https://dimes.github.io/blog/compile-time-di-vs-run-time-di" target="_blank"
rel="external nofollow noopener noreferrer">Compile-time DI vs. Run-time DI</a>
</p>
<p>T:
<a href="./#T: jq 工具使用">jq 工具使用</a>
</p>
<p>S:</p>
<a id="more"></a>
<h3 id="A-Swap-Nodes-in-Pairs">
<a href="#A-Swap-Nodes-in-Pairs" class="headerlink" title="A: Swap Nodes in Pairs"></a>A: Swap Nodes in Pairs</h3>
<blockquote>
<p>Given a linked list, swap every two adjacent nodes and return
its head.</p>
<p>You may
<strong>not</strong> modify the values in the list’s nodes, only
nodes itself may be changed.
</p>
<p>
<strong>Example:</strong>
</p>
<figure class="highlight plain">
<table>
<tr>
<td class="gutter">
<pre><span class="line">1</span><br><span class="line">2</span><br></pre>
</td>
<td class="code">
<pre><span class="line">>Given 1->2->3->4, you should return the list as 2->1->4->3.</span><br><span class="line">></span><br></pre>
</td>
</tr>
</table>
</figure>
</blockquote>
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<td class="gutter">
<pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br></pre>
</td>
<td class="code">
<pre><span class="line"><span class="function"><span class="keyword">func</span> <span class="title">swapPairs</span><span class="params">(head *ListNode)</span> *<span class="title">ListNode</span></span> {</span><br><span class="line"> <span class="keyword">if</span> head == <span class="literal">nil</span> {</span><br><span class="line"> <span class="keyword">return</span> <span class="literal">nil</span></span><br><span class="line"> } <span class="keyword">else</span> <span class="keyword">if</span> head.Next == <span class="literal">nil</span> {</span><br><span class="line"> <span class="keyword">return</span> head</span><br><span class="line"> }</span><br><span class="line"> result := head.Next</span><br><span class="line"> <span class="keyword">var</span> last *ListNode</span><br><span class="line"> <span class="keyword">for</span> curr := head; curr != <span class="literal">nil</span> && curr.Next != <span class="literal">nil</span>; curr = curr.Next {</span><br><span class="line"> <span class="keyword">if</span> last != <span class="literal">nil</span> {</span><br><span class="line"> last.Next = curr.Next</span><br><span class="line"> }</span><br><span class="line"> after := curr.Next.Next</span><br><span class="line"> curr.Next.Next = curr</span><br><span class="line"> curr.Next = after</span><br><span class="line"> last = curr</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> result</span><br><span class="line">}</span><br></pre>
</td>
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<h3 id="R-Compile-time-DI-vs-Run-time-DI">
<a href="#R-Compile-time-DI-vs-Run-time-DI" class="headerlink" title="R: Compile-time DI vs. Run-time DI"></a>R:
<a href="https://dimes.github.io/blog/compile-time-di-vs-run-time-di" target="_blank"
rel="external nofollow noopener noreferrer">Compile-time DI vs. Run-time DI</a>
</h3>
<p>依赖注入</p>
<h3 id="T-jq-工具使用">
<a href="#T-jq-工具使用" class="headerlink" title="T: jq 工具使用"></a>T: jq 工具使用</h3>
<p>jq是一款处理json的工具，用于命令行，支持复杂json的解析和处理，甚至可以加入一些编程性的操作，比如求和、map等</p>
<p>
<a href="https://stedolan.github.io/jq/" target="_blank" rel="external nofollow noopener noreferrer">下载地址</a>
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<a href="#S" class="headerlink" title="S:"></a>S:</h3>
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A: Swap Nodes in Pairs</span>
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T: jq 工具使用</span>
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