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ychaouche/gist:3888918

Created October 14, 2012 15:29
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lazy version of the ADN parser
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gistfile1.txt
def is_valid_sequence(sequence):
for character in sequence:
if character not in "ACTG":
return False
return True
@anshumanv2
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anshumanv2 commented Oct 14, 2012

insert_sequence:
(str, str, int) -> str

The first two parameters are DNA sequences and the third parameter is an index. Return the DNA sequence obtained by inserting the second DNA sequence into the first DNA sequence at the given index. (You can assume that the index is valid.)
For example, If you call this function with arguments 'CCGG', 'AT', and 2, then it should return 'CCATGG'.
When coming up with more examples, think about where the second DNA sequence might be inserted: what are the extremes?

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