Kata

In music on the planet nubulax, there are eight notes in each octave of a scale. This is how they look on a piano as 'white notes':

               "G" "A" "B" "C" "D" "E" "F" "G"

Each DIFFERENT note has it's own SHARP (#).

Sharps must be ordered to any scale in the following pattern:

                F# C# G# D# A# E# B#

It's possible to work out which sharps are in a major scale from its root (the first note of the scale) using these three steps:

• Decide which is the first note of your scale (e.g. E).
• On a piano, find the note immediately below the root (in this case D).
• Using the sharp pattern, count up to (and including) D.

The above example shows that E major has 4 sharps: F#, C#, G#, D#.

Design a function that takes any root note and returns the corresponding number of sharps in an array.

"E" --> should return ["F#", "C#", "G#", "D#"]

The exception to this rule is C major, which has no sharps at all. If root C is entered, the function should return "no sharps".

"C" --> should return "no sharps"

The function should return "undefined note" if the taken object is anything other than one of the the seven capitalised 'white notes' on the piano.

"fkuy8" --> should return "undefined note"