@"The case of converting the ninth character from the left of a string to upper case is probably not the problem you're having trouble solving, is it?"

Yes, the problem I'm having is how to develop a general solution for changing the case of specific letters in a DNA sequence. So, I have many variable sequence positions where the letter case needs to be changed. Furthermore, letter case changes must sometimes occur more than once per DNA sequence.

In reply to Re^2: String character replacement based on position by shu_uemura
in thread String character replacement based on position by shu_uemura

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