simpleFeature.swift

// simpleFeature

/*
Let's say we have an app that works by fetching data from network and allows storing that data for offline use.
Implement a simple feature that fetches, stores and presents a list of contacts and with an ability to select a single contact and view its details.

APIs:

struct Contact {
    let id: String

    let name: String
    let email: String
}

let contacts: [Contact] = PipedriveNetworkClient.get(path: "my_contacts")
...
PipedriveContactsStorage.save(contacts)
...
let savedContacts = PipedriveContactsStorage.fetch()
*/

tallestSkyscraper.swift

// tallestSkyscraper
/*
 A city skyline can be represented as a 2-D array with 1s representing buildings. In the example below, the height of the tallest building is *4* (second-most right column).
[
   [0, 0, 0, 0, 0, 0],
   [0, 0, 0, 0, 1, 0],
   [0, 0, 1, 0, 1, 0],
   [0, 1, 1, 1, 1, 0],
   [1, 1, 1, 1, 1, 1]
]
 Create a function that takes a *skyline* (2-D array of 0’s and 1’s) and returns the height of the tallest skyscraper.
 tallestSkyscraper([
   [0, 0, 0, 0],
   [0, 1, 0, 0],
   [0, 1, 1, 0],
   [1, 1, 1, 1]
 ]) ➞ 3
 tallestSkyscraper([
   [0, 1, 0, 0],
   [0, 1, 0, 0],
   [0, 1, 1, 0],
   [1, 1, 1, 1]
 ]) ➞ 4
 */