📄 ds3.3习题.htm
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<p align="center"><b><font face="oúì?,SimHei" lang="ZH-CN" color="#FFFFFF" size="6">第三章习题</font></b></p>
<p><font color="#FFFFFF"><span lang="EN-US"><b><font size="5">3．<span style="font-style: normal; font-variant: normal; font-family: Times New Roman">
</span></font></b></span><b><font size="5"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">设计一个算法判别一个算术表达式的圆括号是否正确配对。</span></font></b></font></p>
<p class="MsoNormal" align="left"><font color="#FFFFFF"><b><font size="5"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">解答1:</span></font></b></font></p>
<p class="MsoNormal" align="left"><b><font size="5" color="#FFFFFF"><span lang="EN-US" style="mso-bidi-font-size:10.0pt;font-family:"Times New Roman"">Status
Bracket_Test1(char *str)</span><span lang="EN-US" style="mso-bidi-font-size:10.0pt;font-family:"Times New Roman""><br>
{<br>
count=0;<br>
for(p=str;*p;p++)<br>
{<br>
if(*p=='(') count++;<br>
else if(*p==')') count--;<br>
if (count<0) return ERROR;<br>
}<br>
if(count) return ERROR; //</span><span style="mso-bidi-font-size:
10.0pt;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">注意括号不匹配的两种情况</span><span lang="EN-US" style="mso-bidi-font-size:10.0pt;font-family:"Times New Roman""><br>
return OK;<br>
}//Bracket_Test </span></font></b></p>
<p class="MsoNormal" align="left"><font color="#FFFFFF"><b><font size="5"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">解答2:</span></font></b></font></p>
<p class="MsoNormal" align="left" style="margin-top: 0; margin-bottom: 0"><font size="5" color="#FFFFFF"><b><span style="font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">int
Bracket_test2(char *str,</span></b><b>SeqStack *s</b><b><span style="font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">)</span></b></font></p>
<p class="MsoNormal" align="left" style="margin-top: 0; margin-bottom: 0"><b><font size="5" color="#FFFFFF"><span lang="EN-US" style="mso-bidi-font-size:10.0pt;font-family:"Times New Roman""><o:p>
</o:p>
{</span></font></b></p>
<p class="MsoNormal" align="left" style="margin-top: 0; margin-bottom: 0">
<font size="5" color="#FFFFFF"><b>for(p=str;*p!='\0';p++)</b></font></p>
<p class="MsoNormal" align="left" style="margin-top: 0; margin-bottom: 0"><font size="5" color="#FFFFFF"><b> {</b></font></p>
<p class="MsoNormal" align="left" style="margin-top: 0; margin-bottom: 0"><font size="5" color="#FFFFFF"><b>
if(*p=='(') push(s,*p);</b></font></p>
<p class="MsoNormal" align="left" style="margin-top: 0; margin-bottom: 0"><font size="5" color="#FFFFFF"><b>
if(*p==')')</b></font></p>
<p class="MsoNormal" align="left" style="margin-top: 0; margin-bottom: 0"><font size="5" color="#FFFFFF"><b>
if(!Empty_stack(s)) pop(s);</b></font></p>
<p class="MsoNormal" align="left" style="margin-top: 0; margin-bottom: 0"><font size="5" color="#FFFFFF"><b>
else return 0; </b></font></p>
<p class="MsoNormal" align="left" style="margin-top: 0; margin-bottom: 0"><font size="5" color="#FFFFFF"><b> }</b></font></p>
<p class="MsoNormal" align="left" style="margin-top: 0; margin-bottom: 0"> <font size="5" color="#FFFFFF"><b>
if(!Empty_stack(s)||*p!='\0') return 0;</b></font></p>
<p class="MsoNormal" align="left" style="margin-top: 0; margin-bottom: 0"><font size="5" color="#FFFFFF"><b>
return 1;</b></font></p>
<p class="MsoNormal" align="left" style="margin-top: 0; margin-bottom: 0"><span lang="EN-US" style="mso-bidi-font-size:10.0pt;font-family:"Times New Roman""><b><font size="5" color="#FFFFFF">}</font></b></span></p>
<p class="MsoNormal" align="center"><a href="ds3习题.HTM"><b><font size="5" color="#FFFF00">返回</font></b></a></p>
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