Design an algorithm to calculate any two of the string edit distance.

设计一个算法，计算任意两个字符串的编辑距离。

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After generating the QDML file from a DTD grammar I had to edit the file to define the document root element and add type information for non-String values (a couple of ints, in this case).

根据DTD文法生成QDML文件之后，必须编辑该文件来定义文档的根元素，并为非string值(在这里，是几个int)添加类型信息。

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Edit maps an input string to a human-friendly formatted form.

edit将输入字符串映射成用户友好的格式化形式。

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