xml文件内容：
<?xml version="1.0" encoding="UTF-8"?>
<channels>
<channel switchTime="20080101000101" k="1.07" n="6" s="55" channelId="0404" channelName="xxxx.xxxx.xxx.cn"/>
<channel switchTime="20080301010101" k="1.07" n="6" s="55" channelId="0405" channelName="xxxx.xxxx.xxx.cn"/>
<channel switchTime="20080301010101" k="1.07" n="6" s="55" channelId="0406" channelName="xxxx.xxxx.xxx.cn"/>
<channel switchTime="20080301010101" k="1.07" n="6" s="55" channelId="0407" channelName="xxxx.xxxx.xxx.cn"/>
<channel switchTime="20080301010101" k="1.07" n="6" s="55" channelId="0408" channelName="xxxx.xxxx.xxx.cn"/>
<channel switchTime="20080301010101" k="1.07" n="6" s="55" channelId="0409" channelName="xxxx.xxxx.xxx.cn"/>
<channel switchTime="20080301010101" k="1.07" n="6" s="55" channelId="0433" channelName="xxxx.xxxx.xxx.cn"/>
<channel switchTime="20080301010101" k="1.07" n="6" s="55" channelId="0434" channelName="xxxx.xxxx.xxx.cn"/>
<channel switchTime="20080301010101" k="1.07" n="6" s="55" channelId="0437" channelName="xxxx.xxxx.xxx.cn"/>
<channel switchTime="20080301010101" k="1.07" n="6" s="55" channelId="0435" channelName="xxxx.xxxx.xxx.cn"/>
<channel switchTime="20080301010101" k="1.07" n="6" s="55" channelId="0438" channelName="xxxx.xxxx.xxx.cn"/>
<channel switchTime="20080301010101" k="1.07" n="6" s="55" channelId="0439" channelName="xxxx.xxxx.xxx.cn"/>
<channel switchTime="20080301010101" k="1.07" n="6" s="55" channelId="0440" channelName="xxxx.xxxx.xxx.cn"/>
</channels>
import org.apache.commons.digester.Digester;
Digester digester = new Digester();
//此方法作用是是否对XML文档进行DTD验证
digester.setValidating(false);
//addObjectCreate的作用是：当遇见channels元素的时候，产生一个java.util.ArrayList对象
digester.addObjectCreate("channels", "java.util.ArrayList");
//addSetProperties作用是：对channels元素所含的属性赋值(�
插入排序的工作原理是通过构建有序序列，对于未排序数据，在已排序序列中从后向前扫描，找到相应位置并插入。其具体步骤参见代码及注释。
/**
* 插入排序<br/>
* <ul>
* <li>从第一个元素开始，该元素可以认为已经被排序</li>
* <li>取出下一个元素，在已经排序的元素序 ......
