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      <title>牛客网Python入门103题练习|(04--列表（2）)</title>
      <link>https://yuexuan521.github.io/zh/posts/%E7%89%9B%E5%AE%A2%E7%BD%91python%E5%85%A5%E9%97%A8103%E9%A2%98%E7%BB%83%E4%B9%A0_04--%E5%88%97%E8%A1%A82/</link>
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      <description>&lt;h2 id=&#34;np24淘汰排名最后的学生&#34;&gt;⭐NP24 淘汰排名最后的学生&lt;/h2&gt;
&lt;h3 id=&#34;描述&#34;&gt;描述&lt;/h3&gt;
&lt;p&gt;某实验班实行末位淘汰制，期中考试需要淘汰末三位同学。现输入一行多个字符串表示按分数排名的该班级同学的名字（数量一定不少于三个），请你使用list将其封装为列表，然后使用三次pop函数，去掉末三位同学的名字，最后输出淘汰后的班级名字列表。&lt;/p&gt;</description>
      <content:encoded><![CDATA[<h2 id="np24淘汰排名最后的学生">⭐NP24 淘汰排名最后的学生</h2>
<h3 id="描述">描述</h3>
<p>某实验班实行末位淘汰制，期中考试需要淘汰末三位同学。现输入一行多个字符串表示按分数排名的该班级同学的名字（数量一定不少于三个），请你使用list将其封装为列表，然后使用三次pop函数，去掉末三位同学的名字，最后输出淘汰后的班级名字列表。</p>
<h4 id="输入描述">输入描述：</h4>
<p>输入一行多个字符串表示同学名字，最少不少于3个名字，以空格间隔。</p>
<h4 id="输出描述">输出描述：</h4>
<p>输出删除末三位后的完整列表。</p>
<h3 id="示例1">示例1</h3>
<p>输入：</p>
<div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">NiuNiu Tom Tony Lucy
</span></span></code></pre></td></tr></table>
</div>
</div><p>输出：</p>
<div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">[&#39;NiuNiu&#39;]
</span></span></code></pre></td></tr></table>
</div>
</div><div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span><span class="lnt">2
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-python" data-lang="python"><span class="line"><span class="cl"><span class="n">lst</span> <span class="o">=</span> <span class="nb">input</span><span class="p">()</span><span class="o">.</span><span class="n">split</span><span class="p">()</span>
</span></span><span class="line"><span class="cl"><span class="nb">print</span><span class="p">(</span><span class="n">lst</span><span class="p">[:</span><span class="o">-</span><span class="mi">3</span><span class="p">])</span>
</span></span></code></pre></td></tr></table>
</div>
</div><h2 id="np25有序的列表">⭐NP25 有序的列表</h2>
<h3 id="描述-1">描述</h3>
<p>创建一个依次包含字符串&rsquo;P&rsquo;、&lsquo;y&rsquo;、&rsquo;t&rsquo;、&lsquo;h&rsquo;、&lsquo;o&rsquo;和&rsquo;n&rsquo;的列表my_list，先使用sorted函数对列表my_list进行临时排序，第一行输出排序后的完整列表，第二行输出原始的列表。再使用sort函数对列表my_list进行降序排序，第三行输出排序后完整的列表。</p>
<h4 id="输入描述-1">输入描述：</h4>
<p>无</p>
<h4 id="输出描述-1">输出描述：</h4>
<p>第一行输出临时排序后的列表；</p>
<p>第二行输出原始的列表；</p>
<p>第三行输出完成降序排序后的列表。</p>
<div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span><span class="lnt">2
</span><span class="lnt">3
</span><span class="lnt">4
</span><span class="lnt">5
</span><span class="lnt">6
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-python" data-lang="python"><span class="line"><span class="cl"><span class="n">my_list</span> <span class="o">=</span> <span class="p">[</span><span class="s1">&#39;P&#39;</span><span class="p">,</span><span class="s1">&#39;y&#39;</span><span class="p">,</span><span class="s1">&#39;t&#39;</span><span class="p">,</span><span class="s1">&#39;h&#39;</span><span class="p">,</span><span class="s1">&#39;o&#39;</span><span class="p">,</span><span class="s1">&#39;n&#39;</span><span class="p">]</span>
</span></span><span class="line"><span class="cl"><span class="n">nowlist</span> <span class="o">=</span> <span class="nb">sorted</span><span class="p">(</span><span class="n">my_list</span><span class="p">)</span>
</span></span><span class="line"><span class="cl"><span class="nb">print</span><span class="p">(</span><span class="n">nowlist</span><span class="p">)</span>
</span></span><span class="line"><span class="cl"><span class="nb">print</span><span class="p">(</span><span class="n">my_list</span><span class="p">)</span>
</span></span><span class="line"><span class="cl"><span class="n">my_list</span><span class="o">.</span><span class="n">sort</span><span class="p">(</span><span class="n">reverse</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
</span></span><span class="line"><span class="cl"><span class="nb">print</span><span class="p">(</span><span class="n">my_list</span><span class="p">)</span>
</span></span></code></pre></td></tr></table>
</div>
</div><h2 id="np26牛牛的反转列表">⭐NP26 牛牛的反转列表</h2>
<h3 id="描述-2">描述</h3>
<p>牛牛有一个列表记录了各个朋友的喜欢的数字，num = [3, 5, 9, 0, 1, 9, 0, 3]，请你帮他创建列表，然后使用reverse函数将列表反转输出。</p>
<h4 id="输入描述-2">输入描述：</h4>
<p>无</p>
<h4 id="输出描述-2">输出描述：</h4>
<p>第一行输出创建好的原始的列表，第二行输出反转后的列表。</p>
<div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span><span class="lnt">2
</span><span class="lnt">3
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-python" data-lang="python"><span class="line"><span class="cl"><span class="n">lst</span> <span class="o">=</span> <span class="p">[</span><span class="mi">3</span><span class="p">,</span><span class="mi">5</span><span class="p">,</span><span class="mi">9</span><span class="p">,</span><span class="mi">0</span><span class="p">,</span><span class="mi">1</span><span class="p">,</span><span class="mi">9</span><span class="p">,</span><span class="mi">0</span><span class="p">,</span><span class="mi">3</span><span class="p">]</span>
</span></span><span class="line"><span class="cl"><span class="n">lst</span><span class="o">.</span><span class="n">reverse</span><span class="p">()</span>
</span></span><span class="line"><span class="cl"><span class="nb">print</span><span class="p">(</span><span class="n">lst</span><span class="p">)</span>
</span></span></code></pre></td></tr></table>
</div>
</div><h2 id="np27朋友们的喜好">⭐NP27 朋友们的喜好</h2>
<h3 id="描述-3">描述</h3>
<p>牛牛有一个name = [&lsquo;Niumei&rsquo;, &lsquo;YOLO&rsquo;, &lsquo;Niu Ke Le&rsquo;, &lsquo;Mona&rsquo;] 记录了他最好的朋友们的名字，请创建一个二维列表friends，使用append函数将name添加到friends的第一行。</p>
<p>假如Niumei最喜欢吃pizza，最喜欢数字3，YOLO最喜欢吃fish， 最喜欢数字6，Niu Ke Le最喜欢吃potato，最喜欢数字0，Mona最喜欢吃beef，最喜欢数字3。</p>
<p>请再次创建一个列表food依次记录朋友们最喜欢吃的食物，并将创建好的列表使用append函数添加到friends的第二行；</p>
<p>然后再创建一个列表number依次记录朋友们最喜欢的颜色，并将创建好的列表使用append函数添加到friends的第三行。</p>
<p>这样friends就是一个二维list，使用print函数直接打印这个二维list。</p>
<h4 id="输入描述-3">输入描述：</h4>
<p>无</p>
<h4 id="输出描述-3">输出描述：</h4>
<p>[[&lsquo;Niumei&rsquo;, &lsquo;YOLO&rsquo;, &lsquo;Niu Ke Le&rsquo;, &lsquo;Mona&rsquo;], [&lsquo;pizza&rsquo;, &lsquo;fish&rsquo;, &lsquo;potato&rsquo;, &lsquo;beef&rsquo;], [3, 6, 0, 3]]</p>
<div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span><span class="lnt">2
</span><span class="lnt">3
</span><span class="lnt">4
</span><span class="lnt">5
</span><span class="lnt">6
</span><span class="lnt">7
</span><span class="lnt">8
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-python" data-lang="python"><span class="line"><span class="cl"><span class="n">name</span> <span class="o">=</span>  <span class="p">[</span><span class="s1">&#39;Niumei&#39;</span><span class="p">,</span> <span class="s1">&#39;YOLO&#39;</span><span class="p">,</span> <span class="s1">&#39;Niu Ke Le&#39;</span><span class="p">,</span> <span class="s1">&#39;Mona&#39;</span><span class="p">]</span> 
</span></span><span class="line"><span class="cl"><span class="n">food</span> <span class="o">=</span> <span class="p">[</span><span class="s1">&#39;pizza&#39;</span><span class="p">,</span> <span class="s1">&#39;fish&#39;</span><span class="p">,</span> <span class="s1">&#39;potato&#39;</span><span class="p">,</span> <span class="s1">&#39;beef&#39;</span><span class="p">]</span>
</span></span><span class="line"><span class="cl"><span class="n">number</span> <span class="o">=</span>  <span class="p">[</span><span class="mi">3</span><span class="p">,</span> <span class="mi">6</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">3</span><span class="p">]</span>
</span></span><span class="line"><span class="cl"><span class="n">friends</span> <span class="o">=</span> <span class="p">[]</span>
</span></span><span class="line"><span class="cl"><span class="n">friends</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">name</span><span class="p">)</span>
</span></span><span class="line"><span class="cl"><span class="n">friends</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">food</span><span class="p">)</span>
</span></span><span class="line"><span class="cl"><span class="n">friends</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">number</span><span class="p">)</span>
</span></span><span class="line"><span class="cl"><span class="nb">print</span><span class="p">(</span><span class="n">friends</span><span class="p">)</span>
</span></span></code></pre></td></tr></table>
</div>
</div><h2 id="np28密码游戏">⭐NP28 密码游戏</h2>
<h3 id="描述-4">描述</h3>
<p>牛牛和牛妹一起玩密码游戏，牛牛作为发送方会发送一个4位数的整数给牛妹，牛妹接收后将对密码进行破解。</p>
<p>破解方案如下：每位数字都要加上3再除以9的余数代替该位数字，然后将第1位和第3位数字交换，第2位和第4位数字交换。</p>
<p>请输出牛妹破解后的密码。</p>
<h4 id="输入描述-4">输入描述：</h4>
<p>输入一个四位数的整数。</p>
<h4 id="输出描述-4">输出描述：</h4>
<p>输出破解后的密码，以四位数的形式。</p>
<h3 id="示例1-1">示例1</h3>
<p>输入：</p>
<div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">1234
</span></span></code></pre></td></tr></table>
</div>
</div><p>输出：</p>
<div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">6745
</span></span></code></pre></td></tr></table>
</div>
</div><h3 id="备注">备注：</h3>
<div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">输入不会有前置0，但是输出要保持前置0
</span></span></code></pre></td></tr></table>
</div>
</div><div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span><span class="lnt">2
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-python" data-lang="python"><span class="line"><span class="cl"><span class="n">num</span> <span class="o">=</span> <span class="p">[(</span><span class="nb">int</span><span class="p">(</span><span class="n">i</span><span class="p">)</span><span class="o">+</span><span class="mi">3</span><span class="p">)</span><span class="o">%</span><span class="mi">9</span> <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">input</span><span class="p">()]</span>
</span></span><span class="line"><span class="cl"><span class="nb">print</span><span class="p">(</span><span class="sa">f</span><span class="s1">&#39;</span><span class="si">{</span><span class="n">num</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span><span class="si">}{</span><span class="n">num</span><span class="p">[</span><span class="mi">3</span><span class="p">]</span><span class="si">}{</span><span class="n">num</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="si">}{</span><span class="n">num</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="si">}</span><span class="s1">&#39;</span><span class="p">)</span>
</span></span></code></pre></td></tr></table>
</div>
</div><h2 id="np29用列表实现栈">⭐NP29 用列表实现栈</h2>
<h3 id="描述-5">描述</h3>
<p>栈是一种先进后出的数据结构，类似我们生活中挤电梯，最后进入的肯定是先出来，现我们用Python的列表来模拟栈。假设初始的列表为 stack = [1, 2, 3, 4, 5]，请将其视作栈，使用pop函数弹出末尾两个元素，再使用append函数将输入元素加入到栈中，每次操作完成后都要输出整个列表。</p>
<h4 id="输入描述-5">输入描述：</h4>
<p>输入要加入栈中的整数。</p>
<h4 id="输出描述-5">输出描述：</h4>
<p>第一行输出第一次出栈后的列表；</p>
<p>第二行输出第二次出栈后的列表；</p>
<p>第三行输出元素入栈后的列表。</p>
<h3 id="示例1-2">示例1</h3>
<p>输入：</p>
<div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">1
</span></span></code></pre></td></tr></table>
</div>
</div><p>输出：</p>
<div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span><span class="lnt">2
</span><span class="lnt">3
</span><span class="lnt">4
</span><span class="lnt">5
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">[1, 2, 3, 4]
</span></span><span class="line"><span class="cl">[1, 2, 3]
</span></span><span class="line"><span class="cl">[1, 2, 3, 1]
</span></span><span class="line"><span class="cl">
</span></span><span class="line"><span class="cl">说明：
</span></span></code></pre></td></tr></table>
</div>
</div><div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">第一次弹出末尾元素5，第二次弹出末尾元素4，第三次加入新增元素1
</span></span></code></pre></td></tr></table>
</div>
</div><div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span><span class="lnt">2
</span><span class="lnt">3
</span><span class="lnt">4
</span><span class="lnt">5
</span><span class="lnt">6
</span><span class="lnt">7
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-python" data-lang="python"><span class="line"><span class="cl"><span class="n">stack</span> <span class="o">=</span> <span class="p">[</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</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">5</span><span class="p">]</span>
</span></span><span class="line"><span class="cl"><span class="n">stack</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span>
</span></span><span class="line"><span class="cl"><span class="nb">print</span><span class="p">(</span><span class="n">stack</span><span class="p">)</span>
</span></span><span class="line"><span class="cl"><span class="n">stack</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span>
</span></span><span class="line"><span class="cl"><span class="nb">print</span><span class="p">(</span><span class="n">stack</span><span class="p">)</span>
</span></span><span class="line"><span class="cl"><span class="n">stack</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="nb">int</span><span class="p">(</span><span class="nb">input</span><span class="p">()))</span>
</span></span><span class="line"><span class="cl"><span class="nb">print</span><span class="p">(</span><span class="n">stack</span><span class="p">)</span>
</span></span></code></pre></td></tr></table>
</div>
</div><h2 id="np30用列表实现队列">⭐NP30 用列表实现队列</h2>
<h3 id="描述-6">描述</h3>
<p>队列是一种先进先出的数据结构，类似食堂排队打饭，先入队的元素当然要先出队，先请用Python列表模拟队列。现有一列表 queue = [1, 2, 3, 4, 5] 被视作队列，请使用pop函数连续两次取出队首元素，再使用append函数将输入元素添加到队尾，每次操作后都要输出完整的列表。</p>
<h4 id="输入描述-6">输入描述：</h4>
<p>输入一个整数表示要添加到队列的元素。</p>
<h4 id="输出描述-6">输出描述：</h4>
<p>第一行输出第一次取出队首后的列表；</p>
<p>第二行输出第二次取出队首后的列表；</p>
<p>第三行输出添加元素到队列后的列表。</p>
<h3 id="示例1-3">示例1</h3>
<p>输入：</p>
<div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">8
</span></span></code></pre></td></tr></table>
</div>
</div><p>输出：</p>
<div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span><span class="lnt">2
</span><span class="lnt">3
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">[2, 3, 4, 5]
</span></span><span class="line"><span class="cl">[3, 4, 5]
</span></span><span class="line"><span class="cl">[3, 4, 5, 8]
</span></span></code></pre></td></tr></table>
</div>
</div><p>说明：</p>
<div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">第一次弹出队首元素1，第二次弹出队首元素2，第三次加入数字8到队尾
</span></span></code></pre></td></tr></table>
</div>
</div><div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span><span class="lnt">2
</span><span class="lnt">3
</span><span class="lnt">4
</span><span class="lnt">5
</span><span class="lnt">6
</span><span class="lnt">7
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-python" data-lang="python"><span class="line"><span class="cl"><span class="n">queue</span> <span class="o">=</span> <span class="p">[</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</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">5</span><span class="p">]</span>
</span></span><span class="line"><span class="cl"><span class="n">queue</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
</span></span><span class="line"><span class="cl"><span class="nb">print</span><span class="p">(</span><span class="n">queue</span><span class="p">)</span>
</span></span><span class="line"><span class="cl"><span class="n">queue</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
</span></span><span class="line"><span class="cl"><span class="nb">print</span><span class="p">(</span><span class="n">queue</span><span class="p">)</span>
</span></span><span class="line"><span class="cl"><span class="n">queue</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="nb">int</span><span class="p">(</span><span class="nb">input</span><span class="p">()))</span>
</span></span><span class="line"><span class="cl"><span class="nb">print</span><span class="p">(</span><span class="n">queue</span><span class="p">)</span>
</span></span></code></pre></td></tr></table>
</div>
</div><h2 id="np31团队分组">⭐NP31 团队分组</h2>
<h3 id="描述-7">描述</h3>
<p>创建一个列表group_list，其中依次包含字符串 &lsquo;Tom&rsquo;, &lsquo;Allen&rsquo;, &lsquo;Jane&rsquo;, &lsquo;William&rsquo;, &lsquo;Tony&rsquo; 表示这个小组成员的名字。现有三项任务需要他们去完成，根据不同任务的繁琐度和实际情况需要分别派2人、3人、2人来完成，他们决定通过对列表分片来分配任务。</p>
<p>使用print()语句和切片来打印列表group_list的前两个元素表示去做第一个任务的人的名字，
再使用print()语句和切片来打印列表group_list的中间三个元素表示去做第二个任务的人的名字，
再使用print()语句和切片来打印列表group_list的后两个元素表示去做第三个任务的人的名字。</p>
<h4 id="输入描述-7">输入描述：</h4>
<p>无</p>
<h4 id="输出描述-7">输出描述：</h4>
<p>按照题意输出</p>
<p>[&lsquo;Tom&rsquo;, &lsquo;Allen&rsquo;]</p>
<p>[&lsquo;Allen&rsquo;, &lsquo;Jane&rsquo;, &lsquo;William&rsquo;]
[&lsquo;William&rsquo;, &lsquo;Tony&rsquo;]</p>
<div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span><span class="lnt">2
</span><span class="lnt">3
</span><span class="lnt">4
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-python" data-lang="python"><span class="line"><span class="cl"><span class="n">group_list</span> <span class="o">=</span> <span class="p">[</span> <span class="s1">&#39;Tom&#39;</span><span class="p">,</span> <span class="s1">&#39;Allen&#39;</span><span class="p">,</span> <span class="s1">&#39;Jane&#39;</span><span class="p">,</span> <span class="s1">&#39;William&#39;</span><span class="p">,</span> <span class="s1">&#39;Tony&#39;</span><span class="p">]</span>
</span></span><span class="line"><span class="cl"><span class="nb">print</span><span class="p">(</span><span class="sa">f</span><span class="s1">&#39;</span><span class="si">{</span><span class="n">group_list</span><span class="p">[:</span><span class="mi">2</span><span class="p">]</span><span class="si">}</span><span class="s1">&#39;</span><span class="p">)</span>
</span></span><span class="line"><span class="cl"><span class="nb">print</span><span class="p">(</span><span class="sa">f</span><span class="s1">&#39;</span><span class="si">{</span><span class="n">group_list</span><span class="p">[</span><span class="mi">1</span><span class="p">:</span><span class="mi">4</span><span class="p">]</span><span class="si">}</span><span class="s1">&#39;</span><span class="p">)</span>
</span></span><span class="line"><span class="cl"><span class="nb">print</span><span class="p">(</span><span class="sa">f</span><span class="s1">&#39;</span><span class="si">{</span><span class="n">group_list</span><span class="p">[</span><span class="mi">3</span><span class="p">:]</span><span class="si">}</span><span class="s1">&#39;</span><span class="p">)</span>
</span></span></code></pre></td></tr></table>
</div>
</div>]]></content:encoded>
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</rss>
