appacademy/prep-work

preparatory material for interviewing with App Academy

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prep-work's Issues

Event Manager Errata

The errata for the Jumpstart Labs' Event Manager product is no longer relevant as they now use Sunlight::Congress::Legislator.by_zipcode

Explain `split` in intro to programming?

This is used in the practice problems but is not contained in the introduction. People wonder whether they need to know it for the challenge.

Also join and modulo, ord/chr.

Expand Extra Resources with JavaScript links

Some students have expressed that they feel exposure to JavaScript before the course would have helped them. What do you all think about adding some links to JS resources to the Extra Resources page so motivated new students can do some extra studying? I can definitely come up with some good resources that helped me prepare.

14-scramble-string.rb test case 2 is incorrect?

I looked over this problem, the test case 2:

scramble_string("markov", [5, 3, 1, 4, 2, 0]) == "vkaorm"

doesn't look right. If the positions array determine the position of the letters then it should be "vroakm". Can anyone verify?

explain what symbols are?

Have a friend working their way through this that was confused by the sudden mention of symbols. I think even a link out to an explanation elsewhere or a "don't be thrown by the use of symbols, knowing what they are isn't relevant to solving the problem" would be helpful.

09-is-power-of-two.rb

I'm not sure if I just misunderstand the directions or if it is a legitimate error that is_power_of_two(25) returns FALSE. The way I understand it, the directions indicate that they would like it to return TRUE being that 5**2 is 25.

If I am right in my assumption, would you still put this as a medium or would it be hard? I haven't applied yet, but I'm working on it.

2 broken links .pryrc and .rdebugrc files

Hi,

Both download links are broken on the following page:

https://github.com/appacademy/prep-work/blob/master/mini-curriculum/debugging/debugger.md

153  You may also wish
154  to grab my [.pryrc][pryrc] and [.rdebugrc][rdebugrc] files.

Links broken on line 154:

1. https://github.com/ruggeri/dotfiles/blob/master/pryrc
2. https://github.com/ruggeri/dotfiles/blob/master/rdebugrc

Please advise.

Thx.

Coding test 2 practice problem 07

I spent a while doing this problem prepping for the second coding test, and it appears that the complex case (fourth) is wrong as the intersections should be at [2,4], [3,4] not [2,2] [3,4].

Cheatsheet in debugger.md not found

From line 572 in debugger.md, the cheat sheet link on Pivotal Labs' site (after click thru) is dead.

Thanks for the great resources. It's taking me quite a bit longer than I expected to prep for the second challenge, but I'm getting there!

-Britt

Broken links: .pryrc and .rdebugrc

The links are broken on the following page:

https://github.com/appacademy/prep-work/blob/master/mini-curriculum/debugging/debugger.md

153  You may also wish
154  to grab my [.pryrc][pryrc] and [.rdebugrc][rdebugrc] files.

161  [pryrc]: https://github.com/ruggeri/dotfiles/blob/master/ruby/pryrc
162  [debugrc]: https://github.com/ruggeri/dotfiles/blob/master/ruby/rdebugrc

Using a work around for the moment to continue with the material, but I thought others may run into the same issue.

rspec requires a relative path for using with Nitrous.io

https://github.com/appacademy/prep-work/tree/master/coding-test-2/practice-problems/spec
These files require a relative path to work, otherwise rspec cannot find the file. For instance:

require '00_nearest_larger'
require 'rspec'

should be relative , so it should be

require_relative '../lib/00_nearest_larger'
require 'rspec'

This is a minor thing, but it caught me off guard the first time I ran into that.

Need Reminder To Install Ubuntu

We need to be clear that Windows is not a supported development platform.

Explanation on how to use || could use more clarification

It's not immediately clear why if number == (7 || 13) is preferred to number == (7 || 13) in this explanation:

"If you read number == (7 || 13) like English, you might think it
means "Number is equal to 7 or 13". However, Ruby will not interpret
your program this way. Instead, by writing 7 || 13, Ruby will ask if
one of these is true. That's not what you want: you want to use ||
to connect two logical statements like (number == 7) and (number == 13)."

add link to nitrous.io setup to practice problems page.

Remove Hartl tutorial?

Motivate Hartl Tutorial

Maybe we should better explain the purpose of the Rails Tutorial in the prep work? I think telling people that the Hartl tutorial will provide a bird's eye view or Rails and give passing familiarity with different components might be helpful, vs. an expectation that they understand everything inside (as is the case with the other material).

is_power_of_two?

so i tried out the solution to is_power_of_two? with is_power_of_two?(9), it returns false. is this a bug in the code?

Move solutions somewhere else

I don't even know what's the point of solution presence.

Also, I'm not sure whether it's acceptable to use 'prime' module in q3 & q4. I guess not. It isn't clarified, however.

Overhaul coding-test-2

Add language that problems aren't required

Make practice problem 00 easier to understand

• add a comment inside the method definition that says something like "This is the method definition. Write your code here."
• add a comment above the test cases that says something like "Test cases are below. Don't worry about being able to read them. The code you write inside the method definition should make the test cases print true when you run the file. If you see falses, you still have work to do!"

#15 - Discrete Logarithm Problem != medium difficulty

Who gets notified if I accidentally solve the discrete logarithm problem? I was told if I ever solved it I would either wake up very rich or very dead.

Upload Chris Pine's book to a real file host

The link to chris pine's book here links to some god-awful file host where potential students are almost sure to accidentally install mac-keeper or some other crazy spyware.