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Interview: Science Questions

You will be writing one additional function to help analyze responses for a science quiz. You will then add a feature onto that function. Your interview will help guide you through this process. As a reminder, each response is represented as an object with the following keys:

• question - the question that was asked, represented as a string.
• response - the response that was given, represented as a string.
• correct - whether or not the response was graded as correct, represented as a boolean.
• isEssayQuestion - whether or not the response is an essay question, represented as a boolean.

Data for the entire month is stored in an array. For example:

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The following is a sample of a readme Setup section for a node postgres stack:

Setup

• Clone this repository to your local machine
• Install the dependencies for the project
• Ensure your PostgreSQL server is running
• Create a User for this exercise
• Create a database for the exercise with your user as the owner
• Copy [do not rename] the example.env file as .env and update .env with the following fields with your database credentials:

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NODE_ENV=development
PORT=8000
MIGRATION_DB_HOST=localhost
MIGRATION_DB_PORT=5432
MIGRATION_DB_NAME=
MIGRATION_DB_USER=
MIGRATION_DB_PASS=
DB_URL="postgresql://USERNAME@localhost/DATABASE_NAME"

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Core status codes -- can look at as a checklist when building API

• 2XX - success case

  • 200 - Success - good for GET, often the default https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/200

  • 201 - Created - good for POST https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/201

  • 204 - No content - successful, BUT server does not send you information besides an "OK, your request succeeded, 204." Sometimes used on create, never used to get data, but more often for liveness endpoints (endpoints checked every 1 second - 10 minutes that just serve to respond "OK 204 I am alive" for monitoring) like www.something.com/health-check, which is used by monitoring or even sites like IsItDown.com - https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/204

• 4XX - any missing or inacessable resource case "Oops you screwed up."
• 400 - Invalid Request - textbook "you screwed up". Example route /users/123 exists and accepts params. Howevewr the param must be a number and someoneo does /use

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Back to School Shopping Live Interview problems

Welcome to the live interview! We'll be taking this problem set and working on a few additional problems.

Prompt 1 - Find Items

You want to know which items are of the same type. Create a function called findItems that takes the array of items and a type of item as parameters and returns an array of item names.

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import os
import pandas as pd
from sklearn.model_selection import train_test_split

import nltk
from nltk.corpus import stopwords
from nltk.tokenize import RegexpTokenizer

import time

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function generateSpyFromMethod (mthdList) {
  const top = []
  const bottom = []
  mthdList.forEach(function (mthd) {
    const spl = mthd.split('.')
    let first = spl[0]
    let last = spl[1]
    first = first[0].toLowerCase() + first.slice(1)
    last = last[0].toUpperCase() + last.slice(1)
    const spyVar = `${first}${last}Spy`

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module.exports = {
  "access-control-allow-origin": "*",
  "access-control-allow-methods": "GET, POST, PUT, DELETE, OPTIONS",
  "access-control-allow-headers": "Origin, X-Requested-With, Content-Type, Accept, X-Parse-Application-Id, X-Parse-REST-API-Key",
  "access-control-max-age": 10 // Seconds.
};

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// Obviously versions will change.
// Reference for how to set up a headless scraper on EC2
sudo apt-get update
sudo apt-get -y install openjdk-7-jre-headless
sudo apt-get -y install xvfb
sudo apt-get -y install xserver-xorg-core
sudo apt-get -y install xfonts-100dpi xfonts-75dpi xfonts-scalable xfonts-cyrillic
wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add -
sudo sh -c 'echo "deb http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list'
sudo apt-get update

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Building A New File Based Data Connector/Processor

In order to process files of a new type, such as a new type of test we've never processed before, you'll have to define how to process that file within this module. Here are some steps that may help you accomplish this. The majority of this work will occur in the file ~/SzfdData/config/module.config.php and other areas of the SzfdData module.

It is a prerequisite that you have access to our szf code repository to perform these steps. Please get in touch with Jake Alves or another lead engineer to get access to this code repo.

1: Create a schema file by looking at the file you are trying to upload

Some academic tests contain help documentation for the test reports they issue, and some tests do not provide such documentation. Here is an example of the California State Test's documentation for their testing reports.