Trans wrote:
> I have two strings: "aabc" and "aacd". I want to get an "ordered
> contrast" to see the difference in their spellings. Eg.
> 
>   "aabc".ordered_contrast( "aacc" ) => "  cc"
> 
> In the example a space represents a matching string, although I suppose
> there may be a better alternative. In any case, one could also imagine
> a non-ordered contrast:
> 
>   "aabc".contrast( "aacc" ) => "  c "
> 

From this, the 'ordered contrast' means that the first different letter, 
and all following letters, are shown?  And unordered means only the 
different letters are shown?

Google refused to provide a definition or examples.

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