2019-2: Making the Grade
| Score Range | Letter Grade |
| 0–64 | F |
| 65–69 | D |
| 70–79 | C |
| 80–89 | B |
| 90–100 | A |
Write a function that, given an array of integer test scores in the inclusive range 0–100, returns an identically-shaped array of the corresponding letter grades according to the table to the left.
💡 Hint: You may want to investigate the interval index function X⍸Y.
Examples:
(your_function) 0 64 65 69 70 79 80 89 90 100
FFDDCCBBAA
(your_function) ⍬ ⍝ returns an empty vector
(your_function) 2 3⍴71 82 81 82 84 59
CBB
BBF
your_function ←
Solutions
