/// <summary>
/// 查找chs[offset]后面的tailLen个char是否为词
/// </summary>
/// <param name="chs"></param>
/// <param name="offset"></param>
/// <param name="tailLen"></param>
/// <returns>返回chs[offset]字符结点下的词尾索引号,没找到返回-1</returns>
protected int Search(char[] chs, int offset, int tailLen)
{
if (tailLen == 0)
{
return(-1);
}
CharNode cn = dic.head(chs[offset]);
return(Search(cn, chs, offset, tailLen));
}
