Question 1

RMIT room numbers are numbered with the Building Name (i.e., a letter, one of A, B, C, D, E, F, G, H, I, or K), followed by a 4-digit number. For example, H1044. In addition, a few rooms also have an optional final letter, for example: C1307A.

Write a function isValidRoomNumber that takes a string and returns true if it is formatted as a valid room number, and false otherwise. Calling isValidRoomNumber (H307) or isValidRoomNumber (3074H) should return false. Calling isValidRoomNumber (H3074) or isValidRoomNumber (H3074C) or isValidRoomNumber (K4444) should return true.

Question 2

Write a function fixRmitEmail(email). The function takes a RMIT email address (e.g., mp@myrmit.sg) and returns a new string with the following fixes applied:

Leading/Trailing whitespace removed

Any Capitalization of the @MyRmit.ca portion is removed (must be all lower case)

Any Capitalization of the username is left as is (dont change it)

fixRmitEmail( MPDinh@MyRmit.sg ) would return MPDinh@myrmit.sg

Question 3

Write a function subset(from, to), which takes two Number arguments and returns an Array of Numbers starting at from and ending at to (inclusive). If to is larger than from, return the empty array.

Calling subset(7,14) should return [7,8,9,10,11,12,13,14] and subset(100, 1) should return [].

Question 4

Given the following set of steps, write 3 different JavaScript implementations: 1) using a for-loop; 2) using a for-of loop; 3) using forEach():

An array named githubUrls contains strings with URLs of GitHub users (e.g., https://github.com/renedr)

Extract the username portion: https://github.com/renedr to `renedr`

Prepend the `@` symbol to the username: `@renedr`

Create a new array, githubUsers, with these @usernames