合并具有未知排序功能的数据

I have a number of string arrays. The string in every array are ordered the same way, according the same criteria. However, some string may be missing from some arrays, and there may be no array that has a complete set of strings. Moreover, the criteria used to compare the strings is not available to me: outside of the context of the array, I cannot tell which string should precede another.I have a number of string arrays. The string in