Problem 5: Count nucleotides

Augment your program so that it also computes and prints the number of A nucleotides, the number of T nucleotides, the number of G nucleotides, and the number of C nucleotides. Add whatever new variables you need.

When doing this, add at most one extra loop to your program. You can solve this part without adding any new loops at all, by reusing an existing loop. At this point you should also feel free to modify the code we have given you if another structure of if statements makes more sense to you. We just caution you against looping through the data more times than you need to as this could cause your code to run very slowly.

Check your work by manually computing the results for file test-small.fastq, then comparing them to the output of running your program on test-small.fastq. As you modify your program, make sure you are producing output that matches the output format shown above.

Run your program on sample_1.fastq. Cut-and-paste the relevant lines of output into answers.txt (the lines that indicate the G count, C count, A count, and T count). Note that you can use the up-arrow key in the terminal window to retrieve commands you ran previously.