Setup
Deoxyribonucleic acid (DNA) is a chemical found in the nucleus of cells and carries the "instructions" for the development and functioning of living organisms.
In DNA strings, symbols "A" and "T"
and "C" and "G"
are complements of each other. Implement a function DNA_strand
to match the given side of DNA with its complementary side.
Examples
DNA_strand("ATTGC")
# return TAACG
DNA_strand("GTTAAC")
# return CAATTG
Tests
DNA_strand("AAAA")
DNA_strand("CTACC")
DNA_strand("GTAT")
Good luck!
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Top comments (18)
This sounds like a one-liner in JS. Let's see...
As a bonus, any non-DNA letters will be ignored.
i am fresher can you tell me what does this ( => )operator do.
Your help is appreciated.
It’s an arrow function (or anonymous function).
function(a, b) {return a + b;}
Is (almost) the same as:
(a, b) => a + b
There are a few differences but most of the time they aren’t anything to worry about. If you care, this is a good overview: levelup.gitconnected.com/7-differe...
JS:
JavaScript:
Ruby keeps on pleasantly surprising me:
Seems like Lua also has a neat solution:
Another javascript solution
Swift:
I'm trying to complete these everyday for 30 days (hopefully more) - feedback more that welcome here please, thank you! Github PR
Javascript using Map:
PHP:
There is always a better solution, suggest one please - I'm here to learn more .)
OK, I found another one for PHP (7.2 and higher):
In Python:
C#
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- this bit always changes---| ---|
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is set to 0