Portfolio
Complementary_DNA
/*Deoxyribonucleic acid (DNA) is a chemical found in the nucleus of cells and carries the "instructions" for
the development and functioning of living organisms.
If you want to know more http://en.wikipedia.org/wiki/DNA
In DNA strings, symbols "A" and "T" are complements of each other, as "C" and "G". You have function with one
side of the DNA (string, except for Haskell); you need to get the other complementary side. DNA strand is never
empty or there is no DNA at all (again, except for Haskell).
DNA_strand ("ATTGC") # return "TAACG"
DNA_strand ("GTAT") # return "CATA"
*/
#include <string>
std::string DNAStrand(const std::string& dna)
{
std::string a = "";
for(int i =0; i<=dna.length(); i++)
{
switch(dna[i]){
case 'A':
a.push_back('T');
break;
case 'T':
a.push_back('A');
break;
case 'C':
a.push_back('G');
break;
case 'G':
a.push_back('C');
break;
default:
a.push_back(dna[i]);
break;
}
}
a.erase(a.end()-1);
return a;
}