9:20</time></a> </div>
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<p>我觉得示例5中的for()改为下面的更合适些：<br/>
for (unsigned int s = strlen(s) – 1; s &gt;= 0; –s)</p>
<p>for (unsigned int v = v.size() – 1; s &gt;= 0; –s)</p>
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