Interview question of the issue #266 of rendezvous with cassidoo.
Given a set of letter grades, output the GPA (grade point average) of those grades.
Key and examples:
A = 4 grade points
A- = 3.7 grade points
B+ = 3.3 grade points
B = 3 grade points
B- = 2.7 grade points
C+ = 2.3 grade points
C = 2 grade points
C- = 1.7 grade points
D+ = 1.3 grade points
D = 1 grade point
D- = 0.7 grade points
F = 0 grade points
$ calculateGPA(['A'])
$ 4
$ calculateGPA(['F', 'F', 'F'])
$ 0
$ calculateGPA(['A', 'A-', 'B+', 'B', 'B-'])
$ 3.3
$ calculateGPA(['A', 'B+', 'C-', 'A'])
$ 3.3Just pnpm i to install all dependencies and then pnpm t to run the tests!