def longest_substring(string): string = string.replace(",", "").replace("'", "").replace("!", "").replace("?", "").replace("#", "").replace("(", "").replace ...
Create a script with a text editor that counts the number of A's, T's, C's, and G's irregardless of case: a. start with a string that you know how many of each nucleotide there are like, 'ATTGGGCCCC' ...
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