#include "rna_transcription.h"

#include <algorithm>
#include <unordered_map>

namespace transcription {

using namespace std;

char to_rna(char c)
{
    static const unordered_map<char, char> nucleotide_map =
        {{'C', 'G'}, {'G', 'C'}, {'A', 'U'}, {'T', 'A'}};

    return nucleotide_map.at(c);
}

string to_rna(string str)
{
    transform(str.begin(), str.end(), str.begin(),
            static_cast<char (*)(char)>(&to_rna));
    return str;
}

}