Welcome to BHS Computer Science. If you are a student in the class, the first thing you need to do (and which we should have done in class) is set up your GitHub account.
Once you have a GitHub account, click “Log in to GitHub” below to proceed. Or you can click “Use anonymously” to play with the environment but you will not be able to save your work or submit assignments. (You can always log in later by clicking the at the top of the page.)
If you don’t have a GitHub account yet, please create one and then log in here for further instructions.
Congratulations! You have successfully connected this app to GitHub. However you are not yet a member of the GitHub organization for this class, something Mr. Seibel needs to set up for you.
This is your GitHub profile URL:
Click the clipboard icon to copy it and then submit it at this form so he can add you.
Congratulations! You have successfully connected this app to GitHub. And it looks like you have an invitation to join the GitHub organization for this class. You need to accept that invitation before you can proceed. The invite should be sent to whatever email you used when you created your GitHub account.
I see you are logged into GitHub and a member of the berkeley-high-cs GitHub organization. However there seems to have been some problem finishing the setup for your account. Please let Mr. Seibel know.
This is a tool for the BHS Computer Science class at Berkeley High School. It is intended to provide a simple environment for experimenting with Javascript without all the complexities of a full development environment such as ReplIt or Glitch which we may use later in the year.
It is also designed to take advantage of the browser’s ability to run Javascript natively. It does not need access to a server to run code making in extremely responsive even if the Wifi is flaking out.
Finally, under the covers it is saving work to a GitHub repository in a very simplified workflow that does not depend on immediately learning any git commands. Code written in this environment for each assignment is saved to a directory and branch specific to that assignment each time it is saved. Thus when the assignment is done, it is easy to go to GitHub and create a PR containing just the work on that assignment which can then be commented on and worked on further before it is turned in and merged to main.
You're all set! You don't need to worry about this yet but we have successfully created a GitHub repository for your work:
You can get to it any time by clicking on your GitHub username at the top-right of the screen.
This assessment consists of functions you need to write exercising your ability to use Javascript’s basic control constructs. It is a closed book assessment. You should stay on this tab until you are done and there should be no talking. This assessment is about how much you understand. There are no automatic tests but you can use the REPL to test things yourself.
You can move through the questions with the arrows at the upper right
next to the 1 of indicator so if
you're not sure how to write one function move on to another one and
come back if you have time at the end. I want to see how much you do
know. Note: you can also click on
thingsLikeThis in these instructions and the questions to
copy them to the clipboard to avoid spelling mistakes. (I.e. click to
copy and then ⌘-v to paste wherever you want.)
Note The starter code contains a lot of functions. You do not need to worry about how those functions work and don’t need to change them. Write your code below them.
When you are done, please click on your Github username above
and submit a GitHub pull request of the branch
and request me as a reviewer. Doing
this correctly is part of the assessment.
If you are unsure how to request a review, please ask for help!
Write a function named logIfOk that takes a single
argument that can be passed to the function
isOk provided in the starter code to get a boolean
indicating whether the value is “okay”. If the value is okay
according to isOk you should call the provided
log function, passing the value so it can be
logged. Note: you do not need to write isOk or
log but you can adapt the simple implementations in
the starter code if you’d like to test your code.
Write a function named firstOk that takes a numeric
argument and returns the first integer greater than or equal to
zero and less than the argument that is okay according to the
isOk function. If none of the numbers in the range
are okay, it should return undefined.
Write a function named timeToLeet that repeatedly
generates random numbers with the provided
random10k() function and returns the number of
numbers generated that were not leet, according to the provided
isLeet function, before a leet number was
generated. (Thus if the very first number generated is leet, it
should return 0. If the 101st number generated was leet, then it
should return 100.)
Write a function named classify that takes an
arbitrary value as its single argument and calls one of the
provided functions recordOk or
recordNotOk with the value, the former if the value
is okay according isOk
and the latter otherwise.
Write a function named threewayClassify that takes
an arbitrary value as its single argument and calls one of the
three provided functions recordOk,
recordMeh, or recordNotOkwith the
value. It should call recordOk if the value is okay
according to isOk, recordMeh if the
value is meh according to isMeh, and
recordNotOk
otherwise.
Write a function named sumOfSquares that takes a
single numeric argument and returns the sum of the squares of
the positive integers less than the argument. For instance
sumOfSquares(10) should return 285.
Write a function named pairs that takes a single
numeric argument and calls the provided
pair function with every possible pair of numbers
made up of two numbers each in the range from 1 to the argument.
For instance, pairs(3) would result in calls to
pair with the pairs (1, 1),
(1, 2), (2, 1), and
(2, 2). Note that order matters so
(1, 2) and (2, 1) are different pairs.
Also note: pair takes two arguments so you just
need to pass the two numbers; you do not need to do anything
else to create a pair.