Fastly Interview Questions

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Length of String Compression

Let's define the "compacting" of a string as taking an input like the following: 'sstttrrrr' . We want to take the number of sequential appearances number of times it shows up in a row of each letter: s: 2 t: 3 r: 4 And denote them next to the original character in the string,...

Difficulty: 6/10

Max Rectangle in a Histogram

We're given a histogram like the following, where contiguous sharing a common border or touching bars are made up of different heights. Let's assume all bars have the same width. The histogram is converted to an array of the heights of the bars: js const histArr 3, 1, 4, 2, 2, 1 ...

Difficulty: 8/10

Missing Number In Unsorted

Assume we're given an unsorted array of numbers such as this: 2, 5, 1, 4, 9, 6, 3, 7 We are told that when this array is sorted, there is a series of n consecutive numbers. You are given a lower bound and an upper bound for this sequence. There is one consecutive number missing, and ...

Difficulty: 4/10

K Largest Elements From List

We're given a list or array of numbers, like the following: const nums 5, 16, 7, 9, 1, 4, 3, 11, 2 Can you write an algorithm to find the k largest values in a list of n elements? If k were 3 , we'd want the three largest numbers returned. The correct logic would return 16, 11, 9 ....

Difficulty: 5/10

Nth Smallest Number in a Stream

Many modern programming languages have the notion of a stream. A stream is a resource _that's broken down_ and sent usually over a network in small chunks. Imagine a video that's playing it would be inefficient to need to download an entire 1 gigabyte movie before being able to watch it. Inste...

Difficulty: 7/10

Text Justification

Can you justify input text represented by an array of words so it looks pretty when printed and the whitespaces are balanced? For example, in the above image, we have an input array of "wow", "so", "cool", "is", "algodaily!" . This is a list of words we need to properly arrange, with the ideal ...

Difficulty: 9/10

Convert Number to Words

Can you convert a number to its text equivalent? This is otherwise known as number spelling . For example, given 1234 , we expect to get "one thousand two hundred and thirty four" back. Constraints The given number will have 100 digits Let n be the number of digits E...

Difficulty: 8/10

String From Binary Tree

Suppose we're given a simple binary tree lessons an intro to binary trees and search trees like the following: js 1 2 3 4 Can you **generate a string** based off the values of its nodes? With this string, we're going to want to capture ...

Difficulty: 5/10

Detect Loop in Linked List

What is the best way to find out if a linked list contains a loop? You're given the following data structure as the definition of a linked list node: js class LinkedListNode constructor val this.val val this.next null A loop or a cycle in graph less...

Difficulty: 7/10

Introduction to OODSA

Introduction to OODSA In this lesson, we will provide a brief overview of OODSA Object Oriented Design and Analysis on a theoretical level. OODSA is a fundamental concept in software engineering and plays a crucial role in designing complex software systems. OODSA focuses on using object ori...

Difficulty: 5/10

Google Dorks Cheat Sheet

Google Dorks Cheat Sheet A "Google dork" is a search string that uses advanced operators to find sensitive information that is not readily available on the open web. Learning Google dorks can help with penetration testing, security research, and more. This cheat sheet provides some handy Google...

Difficulty: 5/10

Ringpop at Uber

Exploring Ringpop: The Backbone of Uber's Scalability Setting the Stage: The Importance of Ringpop Uber operates on a massive scale, handling enormous amounts of traffic and user requests daily. The architecture behind this is no small feat, and one of the key components making it all po...

Difficulty: 5/10

Interview Reports

Fastly Interview Questions | Glassdoor...

Fastly interview details: 85 interview questions and 80 interview reviews posted anonymously by Fastly interview candidates.

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This information was sourced from reviews originally posted on Glassdoor.

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