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  1. #include <string>
  2. #include <iostream>
  3.  
  4. int main()
  5. {
  6.     std::string genome = "TTATGTTTTAAGGATGGGGCGTTAGTT";
  7.     std::cout << "ATG found at position: " << genome.find("ATG") << std::endl;
  8.  
  9.     while (!genome.empty())
  10.     {
  11.         if (genome.find("ATG", 0) == std::string::npos)
  12.         {
  13.             std::cout << "ATG not found, clearing genome." << std::endl;
  14.             genome.clear();
  15.         }
  16.         else
  17.         {
  18.             int const startGene = genome.find("ATG", 0);
  19.             std::cout << "Start of genome at position: " << startGene << std::endl;
  20.             int endGene = std::min(
  21.                 std::min(genome.find("TAG"), genome.find("TAA")),
  22.                 genome.find("TGA"));
  23.             std::cout << "End of genome at position: " << endGene << std::endl;
  24.  
  25.  
  26.             std::string const currentGene = genome.substr(startGene + 3, endGene - (startGene + 3));
  27.             std::cout << "Current gene: " << currentGene << std::endl;
  28.  
  29.             if ((currentGene.length() % 3) == 0)
  30.             {
  31.                 std::cout << currentGene << " has a length that is divisible by three." << std::endl;
  32.             }
  33.  
  34.             endGene += 3;
  35.  
  36.             std::cout << "About to erase the following section of " << genome << std::endl;
  37.             std::cout << "                                        ";
  38.             for (size_t c = 0; c < endGene; ++c)
  39.             {
  40.                 std::cout << '^';
  41.             }
  42.             std::cout << std::endl;
  43.             genome.erase(0, endGene);
  44.  
  45.             std::cout << "Genome is now: " << genome << std::endl;
  46.         }
  47.     }
  48. }
Success #stdin #stdout 0s 3476KB
comments (?)
stdin 
Standard input is empty
stdout 
ATG found at position: 2
Start of genome at position: 2
End of genome at position: 8
Current gene: TTT
TTT has a length that is divisible by three.
About to erase the following section of TTATGTTTTAAGGATGGGGCGTTAGTT
                                        ^^^^^^^^^^^
Genome is now: GGATGGGGCGTTAGTT
Start of genome at position: 2
End of genome at position: 11
Current gene: GGGCGT
GGGCGT has a length that is divisible by three.
About to erase the following section of GGATGGGGCGTTAGTT
                                        ^^^^^^^^^^^^^^
Genome is now: TT
ATG not found, clearing genome.
https://ideone.com/aS57gB
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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