2007-2022年noip/csp-j第一轮 真题试卷（无答案）
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便于打印，便于自查和复习巩固 <link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/base.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/fancy.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/89637556/raw.css" rel="stylesheet"/><div id="sidebar" style="display: none"><div id="outline"></div></div><div class="pf w0 h0" data-page-no="1" id="pf1"><div class="pc pc1 w0 h0"><img alt="" class="bi x0 y0 w1 h1" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/89637556/bg1.jpg"/><div class="c x1 y1 w2 h2"><div class="t m0 x2 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">【真题】暑假备战<span class="ff2">CSP-J/S</span>：<span class="ff2">NOIP2009</span>普及组初赛<span class="ff2">(</span>第一轮<span class="ff2">)</span></div><div class="t m0 x2 h3 y3 ff1 fs0 fc0 sc0 ls0 ws0">试题及参考答案电子版<span class="ff2">(PDF</span>版、无水印可直接打印<span class="ff2">)</span></div><div class="t m0 x3 h4 y2 ff2 fs0 fc1 sc0 ls0 ws0"> </div><div class="t m0 x2 h3 y4 ff1 fs0 fc0 sc0 ls0 ws0">资料下载<span class="_ _0"> </span><span class="ff2 fc1"> </span></div><div class="t m0 x2 h5 y5 ff1 fs1 fc2 sc0 ls0 ws0">公众号内回复：<span class="ff2">NOIP2009J</span>，即可获取下载链接，直接打印电子版让孩子做即可，文件包含</div><div class="t m0 x4 h5 y6 ff3 fs1 fc2 sc0 ls0 ws0">试题真题</div><div class="t m0 x4 h5 y7 ff3 fs1 fc2 sc0 ls0 ws0">参考答案</div><div class="t m0 x2 h6 y8 ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ff2"> 1 </span>题<span class="_ _1"> </span><span class="ff2 fc1"> </span></div><div class="t m0 x2 h5 y9 ff3 fs1 fc2 sc0 ls0 ws0">关于图灵机下面的说法哪个是正确的：</div><div class="t m0 x4 h5 ya ff4 fs1 fc2 sc0 ls0 ws0">A. <span class="ff3">图灵机是世界上最早的电子计算机。</span> </div><div class="t m0 x4 h5 yb ff4 fs1 fc2 sc0 ls0 ws0">B. <span class="ff3">由于大量使用磁带操作，图灵机运行速度很慢。</span> </div><div class="t m0 x4 h5 yc ff4 fs1 fc2 sc0 ls0 ws0">C. <span class="ff3">图灵机是英国人图灵发明的，在二战中为破译德军的密码发挥了重要作用。</span> </div><div class="t m0 x4 h5 yd ff4 fs1 fc2 sc0 ls0 ws0">D<span class="_ _2"></span>. <span class="ff3">图灵机只是一个理论上的计算模型。</span></div><div class="t m0 x2 h5 ye ff3 fs1 fc2 sc0 ls0 ws0">本题共<span class="ff4"> <span class="ff2">1.5</span> </span>分</div><div class="t m0 x2 h6 yf ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ff2"> 2 </span>题<span class="_ _1"> </span><span class="ff2 fc1"> </span></div><div class="t m0 x2 h5 y10 ff3 fs1 fc2 sc0 ls0 ws0">关于计算机内存下面的说法哪个是正确的：</div><div class="t m0 x4 h5 y11 ff4 fs1 fc2 sc0 ls0 ws0">A. <span class="ff3">随机存储器（</span>RAM<span class="ff3">）的意思是当程序运行时，每次具体分配给程序的内存位置是随机而不确定的。</span> </div><div class="t m0 x4 h5 y12 ff4 fs1 fc2 sc0 ls0 ws0">B. 1MB<span class="ff3">内存通常是指</span>1024*1024<span class="ff3">字节大小的内存。</span> </div><div class="t m0 x4 h5 y13 ff4 fs1 fc2 sc0 ls0 ws0">C. <span class="ff3">计算机内存严格说来包括主存（</span>memory<span class="ff3">）、高速缓存（</span>cache<span class="ff3">）和寄存器（</span>register<span class="ff3">）三个部分。</span> </div><div class="t m0 x4 h5 y14 ff4 fs1 fc2 sc0 ls0 ws0">D<span class="_ _2"></span>. <span class="ff3">一般内存中的数据即使在断电的情况下也能保留</span>2<span class="ff3">个小时以上。</span></div><div class="t m0 x2 h5 y15 ff3 fs1 fc2 sc0 ls0 ws0">本题共<span class="ff4"> <span class="ff2">1.5</span> </span>分</div><div class="t m0 x2 h6 y16 ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ff2"> 3 </span>题<span class="_ _1"> </span><span class="ff2 fc1"> </span></div><div class="t m0 x2 h5 y17 ff3 fs1 fc2 sc0 ls0 ws0">关于<span class="ff4">BIOS</span>下面说法哪个是正确的：</div><div class="t m0 x4 h5 y18 ff4 fs1 fc2 sc0 ls0 ws0">A. BIOS<span class="ff3">是计算机基本输入输出系统软件的简称。</span> </div><div class="t m0 x4 h5 y19 ff4 fs1 fc2 sc0 ls0 ws0">B. BIOS<span class="ff3">里包含了键盘、鼠标、声卡、显卡、打印机等常用输入输出设备的驱动程序。</span> </div><div class="t m0 x4 h5 y1a ff4 fs1 fc2 sc0 ls0 ws0">C. BIOS<span class="ff3">一般由操作系统厂商来开发完成。</span> </div><div class="t m0 x4 h5 y1b ff4 fs1 fc2 sc0 ls0 ws0">D<span class="_ _2"></span>. BIOS<span class="ff3">能提供各种文件拷贝、复制、删除以及目录维护等文件管理功能。</span></div><div class="t m0 x2 h5 y1c ff3 fs1 fc2 sc0 ls0 ws0">本题共<span class="ff4"> <span class="ff2">1.5</span> </span>分</div><div class="t m0 x2 h6 y1d ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ff2"> 4 </span>题<span class="_ _1"> </span><span class="ff2 fc1"> </span></div><div class="t m0 x2 h5 y1e ff3 fs1 fc2 sc0 ls0 ws0">关于<span class="ff4">CPU</span>下面哪个说法是正确的：</div><div class="t m0 x4 h5 y1f ff4 fs1 fc2 sc0 ls0 ws0">A. CPU<span class="ff3">全称为中央处理器（或中央处理单元）。</span> </div><div class="t m0 x4 h5 y20 ff4 fs1 fc2 sc0 ls0 ws0">B. CPU<span class="ff3">可以直接运行汇编语言。</span> </div><div class="t m0 x4 h5 y21 ff4 fs1 fc2 sc0 ls0 ws0">C. <span class="ff3">同样主频下，</span>32<span class="ff3">位的</span>CPU<span class="ff3">比</span>16<span class="ff3">位的</span>CPU<span class="ff3">运行速度快一倍。</span> </div></div><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div><div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/89637556/bg2.jpg"><div class="c x1 y1 w2 h2"><div class="t m0 x4 h5 y22 ff5 fs1 fc2 sc0 ls0 ws0">D<span class="_ _2"></span>. CPU<span class="ff3">最早是由</span>Intel<span class="ff3">公司发明的。</span></div><div class="t m0 x2 h5 y23 ff3 fs1 fc2 sc0 ls0 ws0">本题共<span class="ff5"> <span class="ff6">1.5</span> </span>分</div><div class="t m0 x2 h6 y24 ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ff6"> 5 </span>题<span class="_ _1"> </span><span class="ff6 fc1"> </span></div><div class="t m0 x2 h5 y25 ff3 fs1 fc2 sc0 ls0 ws0">关于<span class="ff5">ASCII</span>，下面哪个说法是正确的：</div><div class="t m0 x4 h5 y26 ff5 fs1 fc2 sc0 ls0 ws0">A. ASCII<span class="ff3">码就是键盘上所有键的唯一编码。</span> </div><div class="t m0 x4 h5 y27 ff5 fs1 fc2 sc0 ls0 ws0">B. <span class="ff3">一个</span>ASCII<span class="ff3">码使用一个字节的内存空间就能够存放。</span> </div><div class="t m0 x4 h5 y28 ff5 fs1 fc2 sc0 ls0 ws0">C. <span class="ff3">最新扩展的</span>ASCII<span class="ff3">编码方案包含了汉字和其他欧洲语言的编码。</span> </div><div class="t m0 x4 h5 y29 ff5 fs1 fc2 sc0 ls0 ws0">D<span class="_ _2"></span>. ASCII<span class="ff3">码是英国人主持制定并推广使用的。</span></div><div class="t m0 x2 h5 y2a ff3 fs1 fc2 sc0 ls0 ws0">本题共<span class="ff5"> <span class="ff6">1.5</span> </span>分</div><div class="t m0 x2 h6 y2b ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ff6"> 6 </span>题<span class="_ _1"> </span><span class="ff6 fc1"> </span></div><div class="t m0 x2 h5 y2c ff3 fs1 fc2 sc0 ls0 ws0">下列软件中不是计算机操作系统的是：</div><div class="t m0 x4 h7 y2d ff5 fs1 fc2 sc0 ls0 ws0">A. Windows </div><div class="t m0 x4 h7 y2e ff5 fs1 fc2 sc0 ls0 ws0">B. Linux </div><div class="t m0 x4 h7 y2f ff5 fs1 fc2 sc0 ls0 ws0">C. OS/2 </div><div class="t m0 x4 h7 y30 ff5 fs1 fc2 sc0 ls0 ws0">D<span class="_ _2"></span>. WPS</div><div class="t m0 x2 h5 y31 ff3 fs1 fc2 sc0 ls0 ws0">本题共<span class="ff5"> <span class="ff6">1.5</span> </span>分</div><div class="t m0 x2 h6 y32 ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ff6"> 7 </span>题<span class="_ _1"> </span><span class="ff6 fc1"> </span></div><div class="t m0 x2 h5 y33 ff3 fs1 fc2 sc0 ls0 ws0">关于互联网，下面的说法哪一个是正确的：</div><div class="t m0 x4 h5 y34 ff5 fs1 fc2 sc0 ls0 ws0">A. <span class="ff3">新一代互联网使用的</span>IPv6<span class="ff3">标准是</span>IPv5<span class="ff3">标准的升级与补充。</span> </div><div class="t m0 x4 h5 y35 ff5 fs1 fc2 sc0 ls0 ws0">B. <span class="ff3">互联网的入网主机如果有了域名就不再需要</span>IP<span class="ff3">地址。</span> </div><div class="t m0 x4 h5 y36 ff5 fs1 fc2 sc0 ls0 ws0">C. <span class="ff3">互联网的基础协议为</span>TCP/IP<span class="ff3">协议。</span> </div><div class="t m0 x4 h5 y37 ff5 fs1 fc2 sc0 ls0 ws0">D<span class="_ _2"></span>. <span class="ff3">互联网上所有可下载的软件及数据资源都是可以合法免费使用的。</span></div><div class="t m0 x2 h5 y38 ff3 fs1 fc2 sc0 ls0 ws0">本题共<span class="ff5"> <span class="ff6">1.5</span> </span>分</div><div class="t m0 x2 h6 y39 ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ff6"> 8 </span>题<span class="_ _1"> </span><span class="ff6 fc1"> </span></div><div class="t m0 x2 h5 y3a ff3 fs1 fc2 sc0 ls0 ws0">关于<span class="ff5">HTML</span>下面哪种说法是正确的：</div><div class="t m0 x4 h5 y3b ff5 fs1 fc2 sc0 ls0 ws0">A. HTML<span class="ff3">实现了文本、图形、声音乃至视频信息的统一编码。</span> </div><div class="t m0 x4 h5 y3c ff5 fs1 fc2 sc0 ls0 ws0">B. HTML<span class="ff3">全称为超文本标记语言。</span> </div><div class="t m0 x4 h5 y3d ff5 fs1 fc2 sc0 ls0 ws0">C. <span class="ff3">网上广泛使用的</span> Flash<span class="ff3">动画都是由</span>HTML<span class="ff3">编写的。</span></div><div class="t m0 x4 h5 y3e ff5 fs1 fc2 sc0 ls0 ws0">D<span class="_ _2"></span>. HTML<span class="ff3">也是一种高级程序设计语言。</span></div><div class="t m0 x2 h5 y3f ff3 fs1 fc2 sc0 ls0 ws0">本题共<span class="ff5"> <span class="ff6">1.5</span> </span>分</div></div><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div><div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/89637556/bg3.jpg"><div class="c x1 y40 w2 h2"><div class="t m0 x2 h6 y41 ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ff7"> 9 </span>题<span class="_ _1"> </span><span class="ff7 fc1"> </span></div><div class="t m0 x2 h5 y42 ff3 fs1 fc2 sc0 ls0 ws0">关于程序设计语言，下面哪个说法是正确的：</div><div class="t m0 x4 h5 y43 ff8 fs1 fc2 sc0 ls0 ws0">A. <span class="ff3">加了注释的程序一般会比同样的没有加注释的程序运行速度慢。</span> </div><div class="t m0 x4 h5 y44 ff8 fs1 fc2 sc0 ls0 ws0">B. <span class="ff3">高级语言开发的程序不能使用在低层次的硬件系统如：自控机床或低端手机上。</span> </div><div class="t m0 x4 h5 y45 ff8 fs1 fc2 sc0 ls0 ws0">C. <span class="ff3">高级语言相对于低级语言更容易实现跨平台的移植。</span> </div><div class="t m0 x4 h5 y46 ff8 fs1 fc2 sc0 ls0 ws0">D<span class="_ _2"></span>. <span class="ff3">以上说法都不对。</span></div><div class="t m0 x2 h5 y47 ff3 fs1 fc2 sc0 ls0 ws0">本题共<span class="ff8"> <span class="ff7">1.5</span> </span>分</div><div class="t m0 x2 h6 y48 ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ff7"> 10 </span>题<span class="_ _3"> </span><span class="ff7 fc1"> </span></div><div class="t m0 x2 h5 y49 ff3 fs1 fc2 sc0 ls0 ws0">已知大写字母<span class="ff8">A</span>的<span class="ff8">ASCII</span>编码为<span class="ff8">65</span>（<span class="ff8">10</span>进制），则大写字母<span class="ff8">J</span>的<span class="ff8">10</span>进制<span class="ff8">ASCII</span>编码为：</div><div class="t m0 x4 h8 y4a ff8 fs1 fc2 sc0 ls0 ws0">A. 71</div><div class="t m0 x4 h8 y4b ff8 fs1 fc2 sc0 ls0 ws0">B. 72 </div><div class="t m0 x4 h8 y4c ff8 fs1 fc2 sc0 ls0 ws0">C. 73 </div><div class="t m0 x4 h5 y4d ff8 fs1 fc2 sc0 ls0 ws0">D<span class="_ _2"></span>. <span class="ff3">以上都不是</span></div><div class="t m0 x2 h5 y4e ff3 fs1 fc2 sc0 ls0 ws0">本题共<span class="ff8"> <span class="ff7">1.5</span> </span>分</div><div class="t m0 x2 h6 y4f ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ff7"> 11 </span>题<span class="_ _3"> </span><span class="ff7 fc1"> </span></div><div class="t m0 x2 h5 y50 ff3 fs1 fc2 sc0 ls0 ws0">十进制小数<span class="ff8">125.125</span>对应的<span class="ff8">8</span>进制数是</div><div class="t m0 x4 h8 y51 ff8 fs1 fc2 sc0 ls0 ws0">A. 100.1 </div><div class="t m0 x4 h8 y52 ff8 fs1 fc2 sc0 ls0 ws0">B. 175.175 </div><div class="t m0 x4 h8 y53 ff8 fs1 fc2 sc0 ls0 ws0">C. 175.1 </div><div class="t m0 x4 h8 y54 ff8 fs1 fc2 sc0 ls0 ws0">D<span class="_ _2"></span>. 100.175</div><div class="t m0 x2 h5 y55 ff3 fs1 fc2 sc0 ls0 ws0">本题共<span class="ff8"> <span class="ff7">1.5</span> </span>分</div><div class="t m0 x2 h6 y56 ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ff7"> 12 </span>题<span class="_ _3"> </span><span class="ff7 fc1"> </span></div><div class="t m0 x2 h5 y57 ff3 fs1 fc2 sc0 ls0 ws0">有六个元素<span class="ff8">FEDCBA </span>从左至右依次顺序进栈，在进栈过程中会有元素被弹出栈。问下列哪一个<span class="ff1">不可能</span>是合法的</div><div class="t m0 x2 h5 y58 ff3 fs1 fc2 sc0 ls0 ws0">出栈序列？</div><div class="t m0 x4 h8 y59 ff8 fs1 fc2 sc0 ls0 ws0">A. EDCF<span class="_ _4"></span>AB </div><div class="t m0 x4 h8 y5a ff8 fs1 fc2 sc0 ls0 ws0">B. DECABF </div><div class="t m0 x4 h8 y5b ff8 fs1 fc2 sc0 ls0 ws0">C. CDFEBA </div><div class="t m0 x4 h8 y5c ff8 fs1 fc2 sc0 ls0 ws0">D<span class="_ _2"></span>. BCDAEF</div><div class="t m0 x2 h5 y5d ff3 fs1 fc2 sc0 ls0 ws0">本题共<span class="ff8"> <span class="ff7">1.5</span> </span>分</div><div class="t m0 x2 h6 y5e ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ff7"> 13 </span>题<span class="_ _3"> </span><span class="ff7 fc1"> </span></div><div class="t m0 x2 h5 y5f ff3 fs1 fc2 sc0 ls0 ws0">表达式<span class="_ _5"> </span><span class="ff9 fs3">a*(b+c)<span class="ff8">-</span>d<span class="_ _5"> </span></span>的后缀表达式是：</div><div class="t m0 x4 h8 y60 ff8 fs1 fc2 sc0 ls0 ws0">A. <span class="_ _5"> </span><span class="ff9 fs3">abcd*+<span class="ff8">-<span class="_ _5"> </span></span></span> </div><div class="t m0 x4 h8 y61 ff8 fs1 fc2 sc0 ls0 ws0">B. <span class="_ _5"> </span><span class="ff9 fs3">abc+*d<span class="ff8">-<span class="_ _5"> </span></span></span> </div><div class="t m0 x4 h8 y62 ff8 fs1 fc2 sc0 ls0 ws0">C. <span class="_ _5"> </span><span class="ff9 fs3">abc*+d<span class="ff8">-<span class="_ _5"> </span></span></span> </div><div class="t m0 x4 h8 y63 ff8 fs1 fc2 sc0 ls0 ws0">D<span class="_ _2"></span>. <span class="_ _5"> </span><span class="fs3">-<span class="ff9">+*abcd</span></span></div></div><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div><div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/89637556/bg4.jpg"><div class="c x1 y64 w2 h9"><div class="t m0 x2 h5 y65 ff3 fs1 fc2 sc0 ls0 ws0">本题共<span class="ffa"> <span class="ffb">1.5</span> </span>分</div><div class="t m0 x2 h6 y66 ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ffb"> 14 </span>题<span class="_ _3"> </span><span class="ffb fc1"> </span></div><div class="t m0 x2 h5 y67 ff3 fs1 fc2 sc0 ls0 ws0">一个包含<span class="ffa">n</span>个分支结点（非叶结点）的非空二叉树，它的叶结点数目最多为：</div><div class="t m0 x4 ha y68 ffa fs1 fc2 sc0 ls0 ws0">A. 2n+1</div><div class="t m0 x4 ha y69 ffa fs1 fc2 sc0 ls0 ws0">B. 2n-1 </div><div class="t m0 x4 ha y6a ffa fs1 fc2 sc0 ls0 ws0">C. n-1</div><div class="t m0 x4 ha y6b ffa fs1 fc2 sc0 ls0 ws0">D<span class="_ _2"></span>. n+1</div><div class="t m0 x2 h5 y6c ff3 fs1 fc2 sc0 ls0 ws0">本题共<span class="ffa"> <span class="ffb">1.5</span> </span>分</div><div class="t m0 x2 h6 y6d ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ffb"> 15 </span>题<span class="_ _3"> </span><span class="ffb fc1"> </span></div><div class="t m0 x2 h5 y6e ff3 fs1 fc2 sc0 ls0 ws0">快速排序最坏情况下的算法时间复杂度为：</div><div class="t m0 x4 ha y6f ffa fs1 fc2 sc0 ls0 ws0">A. O(log</div><div class="t m0 x5 hb y70 ffa fs4 fc2 sc0 ls0 ws0">2</div><div class="t m0 x6 ha y6f ffa fs1 fc2 sc0 ls0 ws0">n) </div><div class="t m0 x4 ha y71 ffa fs1 fc2 sc0 ls0 ws0">B. O(n)</div><div class="t m0 x4 ha y72 ffa fs1 fc2 sc0 ls0 ws0">C. O(nlog</div><div class="t m0 x7 hb y73 ffa fs4 fc2 sc0 ls0 ws0">2</div><div class="t m0 x8 ha y72 ffa fs1 fc2 sc0 ls0 ws0">n)</div><div class="t m0 x4 ha y74 ffa fs1 fc2 sc0 ls0 ws0">D<span class="_ _2"></span>. O(n</div><div class="t m0 x9 hb y75 ffa fs4 fc2 sc0 ls0 ws0">2</div><div class="t m0 xa ha y74 ffa fs1 fc2 sc0 ls0 ws0">)</div><div class="t m0 x2 h5 y76 ff3 fs1 fc2 sc0 ls0 ws0">本题共<span class="ffa"> <span class="ffb">1.5</span> </span>分</div><div class="t m0 x2 h6 y77 ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ffb"> 16 </span>题<span class="_ _3"> </span><span class="ffb fc1"> </span></div><div class="t m0 x2 h5 y78 ff3 fs1 fc2 sc0 ls0 ws0">有一个由<span class="ffa">4000</span>个整数构成的顺序表，假定表中的元素已经按升序排列，采用二分查找定位一个元素。则最多</div><div class="t m0 x2 h5 y79 ff3 fs1 fc2 sc0 ls0 ws0">需要几次比较就能确定是否存在所查找的元素：</div><div class="t m0 x4 h5 y7a ffa fs1 fc2 sc0 ls0 ws0">A. 11<span class="ff3">次</span> </div><div class="t m0 x4 h5 y7b ffa fs1 fc2 sc0 ls0 ws0">B. 12<span class="ff3">次</span> </div><div class="t m0 x4 h5 y7c ffa fs1 fc2 sc0 ls0 ws0">C. 13<span class="ff3">次</span> </div><div class="t m0 x4 h5 y7d ffa fs1 fc2 sc0 ls0 ws0">D<span class="_ _2"></span>. 14<span class="ff3">次</span></div><div class="t m0 x2 h5 y7e ff3 fs1 fc2 sc0 ls0 ws0">本题共<span class="ffa"> <span class="ffb">1.5</span> </span>分</div><div class="t m0 x2 h6 y7f ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ffb"> 17 </span>题<span class="_ _3"> </span><span class="ffb fc1"> </span></div><div class="t m0 x2 h5 y80 ff3 fs1 fc2 sc0 ls0 ws0">排序算法是稳定的意思是关键码相同的记录排序前后相对位置不发生改变，下列哪种排序算法是不稳定的：</div><div class="t m0 x4 h5 y81 ffa fs1 fc2 sc0 ls0 ws0">A. <span class="ff3">冒泡排序</span> </div><div class="t m0 x4 h5 y82 ffa fs1 fc2 sc0 ls0 ws0">B. <span class="ff3">插入排序</span> </div><div class="t m0 x4 h5 y83 ffa fs1 fc2 sc0 ls0 ws0">C. <span class="ff3">归并排序</span> </div><div class="t m0 x4 h5 y84 ffa fs1 fc2 sc0 ls0 ws0">D<span class="_ _2"></span>. <span class="ff3">快速排序</span></div><div class="t m0 x2 h5 y85 ff3 fs1 fc2 sc0 ls0 ws0">本题共<span class="ffa"> <span class="ffb">1.5</span> </span>分</div><div class="t m0 x2 h6 y86 ff1 fs2 fc0 sc0 ls0 ws0">第<span class="ffb"> 18 </span>题<span class="_ _3"> </span><span class="ffb fc1"> </span></div><div class="t m0 x2 h5 y87 ff3 fs1 fc2 sc0 ls0 ws0">已知<span class="ffa">n</span>个顶点的有向图，若该图是强连通的（从所有顶点都存在路径到达其他顶点），则该图中最少有多少条</div><div class="t m0 x2 h5 y88 ff3 fs1 fc2 sc0 ls0 ws0">有向边？</div><div class="t m0 x4 ha y89 ffa fs1 fc2 sc0 ls0 ws0">A. n</div></div><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div>