prototype-breakout.md

Prototype Practice

1. Given the following dataset, return an array of just the front-end classrooms

let classrooms = [
  { roomLetter: 'A', program: 'FE', capacity: 32 },
  { roomLetter: 'B', program: 'BE', capacity: 29 },
  { roomLetter: 'C', program: 'FE', capacity: 27 },
  { roomLetter: 'D', program: 'BE', capacity: 30 },
  { roomLetter: 'E', program: 'FE', capacity: 22 },
  { roomLetter: 'F', program: 'BE', capacity: 19 },
  { roomLetter: 'G', program: 'FE', capacity: 29 },
  { roomLetter: 'H', program: 'BE', capacity: 18 }
];

Example Output:

[
  { roomLetter: 'A', program: 'FE', capacity: 32 },
  { roomLetter: 'C', program: 'FE', capacity: 27 },
  { roomLetter: 'E', program: 'FE', capacity: 22 },
  { roomLetter: 'G', program: 'FE', capacity: 29 }
]

---

2. Given the following dataset, return an array of objects where the keys are mod (value: the number of the module) and studentsPerInstructor (value: how many students per instructor there are for that mod.)

let mods = [
  { mod: 1, students: 27, instructors: 3 },
  { mod: 2, students: 33, instructors: 3 },
  { mod: 3, students: 20, instructors: 2 },
  { mod: 4, students: 16, instructors: 2 }
];

Example Output:

[
  { mod: 1, studentsPerInstructor: 9 },
  { mod: 2, studentsPerInstructor: 11 },
  { mod: 3, studentsPerInstructor: 10 },
  { mod: 4, studentsPerInstructor: 8 }
]

---

3. Given the following dataset, return an array of all the instructors who can teach JavaScript.

let instructors = [
  { name: 'Pam', module: 2, teaches: ['scope', 'recursion', 'node'] },
  { name: 'Brittany', module: 2, teaches: ['oop', 'pwas'] },
  { name: 'Nathaniel', module: 2, teaches: ['oop', 'scope', 'mobile'] },
  { name: 'Robbie', module: 4, teaches: ['node', 'pwas'] },
  { name: 'Leta', module: 4, teaches: ['pwas', 'node', 'recursion'] },
  { name: 'Travis', module: 1, teaches: ['javascript', 'html', 'css'] },
  { name: 'Louisa', module: 1, teaches: ['javascript', 'html', 'css', 'node', 'pwas'] },
  { name: 'Christie', module: 3, teaches: ['javascript', 'react', 'node'] },
  { name: 'Will', module: 3, teaches: ['javascript', 'redux', 'react', 'oop', 'scope'] }
];

Example Output:

['Travis', 'Louisa', 'Christie', 'Will']

---

4. Given the following dataset, return an object where the keys are 'feCapacity' and 'beCapacity', and the values are the total capacity for all classrooms in each program.

let classrooms = [
  { roomLetter: 'A', program: 'FE', capacity: 32 },
  { roomLetter: 'B', program: 'BE', capacity: 29 },
  { roomLetter: 'C', program: 'FE', capacity: 27 },
  { roomLetter: 'D', program: 'BE', capacity: 30 },
  { roomLetter: 'E', program: 'FE', capacity: 22 },
  { roomLetter: 'F', program: 'BE', capacity: 19 },
  { roomLetter: 'G', program: 'FE', capacity: 29 },
  { roomLetter: 'H', program: 'BE', capacity: 18 }
];

Example Output:

{ 
  feCapacity: 110,
  beCapacity: 96
}

---

5. Given the following dataset, return an array of all unique toppings that the bakery needs. (no duplicates)

let bakery = [
  {
    cakeFlavor: 'dark chocolate',
    filling: null,
    frosting: 'dark chocolate ganache',
    toppings: [ 'dutch process cocoa', 'toasted sugar', 'smoked sea salt' ]
  },
  {
    cakeFlavor: 'yellow',
    filling: 'citrus glaze',
    frosting: 'chantilly cream',
    toppings: [ 'berries', 'edible flowers' ]
  },
  {
    cakeFlavor: 'white chiffon',
    filling: 'mint and sage drizzle',
    frosting: 'whipped sweet cream',
    toppings: [ 'mint', 'cranberry', 'edible flowers' ]
  },
  {
    cakeFlavor: 'butter rum',
    filling: 'ginger cardamom swirl',
    frosting: 'spiced rum glaze',
    toppings: [ 'crystallized ginger', 'toasted sugar' ]
  },
  {
    cakeFlavor: 'vanilla',
    filling: 'St Germaine',
    frosting: 'whipped cream',
    toppings: [ 'smoked sea salt', 'crystallized ginger', 'berries' ]
  },
  {
    cakeFlavor: 'honey',
    filling: 'chocolate and cayenne',
    frosting: 'chocolate buttercream',
    toppings: [ 'smoked sea salt', 'toasted sugar' ]
  }
];

Example Output:

['dutch process cocoa', 'toasted sugar', 'smoked sea salt', 'berries', 'edible flowers', 'mint', 'cranberry', 'crystallized ginger']