📄 ds4习2.htm
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<title>数 据 结 构</title>
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<p align="center"><b><font size="5" color="#FFFF00" face="宋体"><span style="mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 黑体; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">习题</span></font></b></p>
<p class="MsoNormal"><font color="#FFFFFF" size="5"><b><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">2</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">．利用</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">C</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">的库函数</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">strlen,strcpy</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">（或</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">strncpy</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">）写一个算法</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">void
StrDelete(char *S,int i,int m) </span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">，删除串</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">S</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">中从位置</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">I</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">开始的连续的</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">m</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">个字符。若</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">i</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">≥</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">strlen(S)</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">，则没有字符被删除；若</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">i+m</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">≥</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">strlen(S)</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">，则将</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">S</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">中从位置</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">i</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">开始直至末尾的字符均被删去。</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><o:p>
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<p style="margin-top: 0; margin-bottom: 0"><font color="#FFFFFF" size="5"><b><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">void
StrDelete(char *S,int t,int m) </span></b></font></p>
<p style="margin-top: 0; margin-bottom: 0"><font color="#FFFFFF" size="5"><b><span style="mso-bidi-font-size: 10.0pt" lang="EN-US">{</span></b></font></p>
<p style="margin-top: 0; margin-bottom: 0"><font color="#FFFFFF" size="5"><b><span style="mso-bidi-font-size: 10.0pt" lang="EN-US">
lens=strlen(S);</span></b></font></p>
<p style="margin-top: 0; margin-bottom: 0"><font color="#FFFFFF" size="5"><b><span style="mso-bidi-font-size: 10.0pt" lang="EN-US">
if(i<0||i>=lens) return;</span></b></font></p>
<p style="margin-top: 0; margin-bottom: 0"><font color="#FFFFFF" size="5"><b><span style="mso-bidi-font-size: 10.0pt" lang="EN-US">
if(i+m>=lens) lens=i;</span></b></font></p>
<p style="margin-top: 0; margin-bottom: 0"><font color="#FFFFFF" size="5"><b><span style="mso-bidi-font-size: 10.0pt" lang="EN-US">
else</span></b></font></p>
<p style="margin-top: 0; margin-bottom: 0"><font color="#FFFFFF" size="5"><b><span style="mso-bidi-font-size: 10.0pt" lang="EN-US">
{</span></b></font></p>
<p style="margin-top: 0; margin-bottom: 0"><font color="#FFFFFF" size="5"><b><span style="mso-bidi-font-size: 10.0pt" lang="EN-US">
for(j=i-1,k=i+m-1;k<lens;k++;j++)</span></b></font></p>
<p style="margin-top: 0; margin-bottom: 0"><font color="#FFFFFF" size="5"><b><span style="mso-bidi-font-size: 10.0pt" lang="EN-US">
S[j]=S[k];</span></b></font></p>
<p style="margin-top: 0; margin-bottom: 0"><font color="#FFFFFF" size="5"><b><span style="mso-bidi-font-size: 10.0pt" lang="EN-US">
lens=lens-m;</span></b></font></p>
<p style="margin-top: 0; margin-bottom: 0"><font color="#FFFFFF" size="5"><b><span style="mso-bidi-font-size: 10.0pt" lang="EN-US">
}</span></b></font></p>
<p style="margin-top: 0; margin-bottom: 0"><font color="#FFFFFF" size="5"><b><span style="mso-bidi-font-size: 10.0pt" lang="EN-US">
return OK;</span></b></font></p>
<p style="margin-top: 0; margin-bottom: 0"><font color="#FFFFFF" size="5"><b><span style="mso-bidi-font-size: 10.0pt" lang="EN-US">}</span></b></font></p>
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