1. Write a function called "remove_vowels" that will take a string parameter, then return that string with any vowels inside removed. This function needs to use a loop.

2. Write a function called "is_just_notes" that takes a string parameter containing some number of letters. It should return true if the string only contains musical notes A-G (and spaces), and false if it contains anything else.

3. Read and test the following function:

function do_something(in_string) { let a = 1 let b = ""

while ( true ) { if ( in_string[a] == " " || in_string[a] == "." || in_string[a] == "," || in_string[a] == "?" ) { return b }

a = a + 1 b = b + in_string[a] } }

Pass some inputs to this function and try to figure out what it's supposed to do. What bugs are there? How might the bugs be fixed?