📄 question_4.htm
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10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>和</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>B</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>′</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>=(y</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>，</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>x</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>，</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>x</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>，</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>z))</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>。若</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>A</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>′</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>=B</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>′</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>=</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>空表，则</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>A=B</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>；若</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>A</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>′</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>=</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>空表，而</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>B</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>′≠空表，或者两者均不为空表，且</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>A</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>′的首元小于</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>B</span><span lang=EN-US
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>'的首元，则</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>A<B:</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>否则</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>A>B</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>。<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>提示：算法的基本思想为：若相等，则</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>j+l</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>，之后继续比较后继元素；否则即可得出比较结果。显然，</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>j</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>的初值应为</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>0</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>，循环的条件是</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>j</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>不超出其中任何一个表的范围。若在循环内不能得出比较结果，则循环结束时有</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>3</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>种可能出现的情况需要区分。<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>【函数</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>1</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>】<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>int compare(SqListA</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>，</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>SqList B)<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:
"Times New Roman"'>{<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>//</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>若</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>A<B</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>，则返回</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>-1</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>；若</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>A=B</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>，则返回</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>0:</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>若</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>A>B</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>，则返回</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>1<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>j=0</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>；<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>while(i<<u><span
style="mso-spacerun: yes"> </span>(1)<span style="mso-spacerun:
yes"> </span></u></span><span style='mso-bidi-font-size:10.5pt;
font-family:宋体;mso-hansi-font-family:"Times New Roman"'>＆＆</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>j<<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'><span style="mso-spacerun:
yes"> </span>B</span><span style='mso-bidi-font-size:10.5pt;
font-family:宋体;mso-hansi-font-family:"Times New Roman"'>．</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>length)<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>if(A</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>．</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>elem[j]<<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'><span style="mso-spacerun:
yes"> </span>B</span><span style='mso-bidi-font-size:10.5pt;
font-family:宋体;mso-hansi-font-family:"Times New Roman"'>．</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>elem[j])return(-1)</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>；<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>else if(A</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>．</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>elem[j]><o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'><span style="mso-spacerun:
yes"> </span>B</span><span style='mso-bidi-font-size:10.5pt;
font-family:宋体;mso-hansi-font-family:"Times New Roman"'>．</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>elem[j])return<u><span
style="mso-spacerun: yes"> </span>(1)<span style="mso-spacerun:
yes"> </span></u></span><span style='mso-bidi-font-size:10.5pt;
font-family:宋体;mso-hansi-font-family:"Times New Roman"'>；<span lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>else<u><span style="mso-spacerun:
yes"> </span>(2)<span style="mso-spacerun: yes"> </span></u></span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>；<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>if(A</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>．</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>length==<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'><span style="mso-spacerun:
yes"> </span>B</span><span style='mso-bidi-font-size:10.5pt;
font-family:宋体;mso-hansi-font-family:"Times New Roman"'>．</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>length)return(0)</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>；<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>else if(A</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>．</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>length<<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'><span style="mso-spacerun:
yes"> </span>B</span><span style='mso-bidi-font-size:10.5pt;
font-family:宋体;mso-hansi-font-family:"Times New Roman"'>．</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>length)return(-1)</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>；<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>else return<u><span
style="mso-spacerun: yes"> </span>(1)<span style="mso-spacerun:
yes"> </span></u></span><span style='mso-bidi-font-size:10.5pt;
font-family:宋体;mso-hansi-font-family:"Times New Roman"'>；<span lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:
"Times New Roman"'>}</span><span lang=EN-US style='mso-bidi-font-size:10.5pt'>//compare<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>//</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>函数</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>1</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>的时间复杂度是</span><u><span
lang=EN-US style='mso-bidi-font-size:10.5pt'><span style="mso-spacerun:
yes"> </span>(3)<span style="mso-spacerun: yes"> </span></span></u><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>。<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>【函数</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>2</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>说明】<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>函数</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>exchange_L(SLink&L</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>，</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>int m)</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>的功能是：用尽可能少的辅助空间将单链表中前</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>m</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>个结点和后</span><span
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