Quora Interview Questions

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Max Product of Three Numbers

Given an unsorted array of integers, can you write a method maxProductOfThree unsorted: array to find the largest product from three of the numbers? For example, given the following array: 1, 9, 22, 3, 15, 7 The largest product of three numbers is 2310 . This results from 15 * 7 * 22 ...

Difficulty: 5/10

The Two Coloring Graph Problem

Question Given a graph, can you use two colors to color each node of the graph, such that no two adjacent nodes have the same color? The Problem The graph coloring problem is a well known problem in computer science. It requires coloring different nodes of the graph so that two adj...

Difficulty: 6/10

Find the Intersection of Two Linked Lists

Assume you have a Linked List implementation that has the following API: js prepend to start of list prepend val appends to end of list append val get an array of node values for testing toArray Can you write a method getIntersection list1, list2 to find the interse...

Difficulty: 4/10

How Out of Order

*This was submitted by user Hackleman.* Determine how "out of order" a list is by writing a function that returns the number of inversions in that list. Two elements of a list L , L i and L j , form an inversion if L i j . For example, the list 5, 4, 3, 2, 1 has 10 inversi...

Difficulty: 5/10

Design A Least Recently Used (LRU) Cache

A cache pronounced cash is a place of storage that allows for faster data retrieval. Separate from the main data storage, it's usually faster memory that houses frequently accessed values. With a cache in place, when a client application needs to access data, it'll check the cache first befo...

Difficulty: 7/10

Merge K (Multiple) Sorted Lists

You're given an array of multiple sorted linked lists. Can you write a method that returns it transformed into a single sorted linked list? Each linked list can be represented as a series of nodes with the following definition: js function Node val this.value val this.next...

Difficulty: 8/10

Fast Minimum In Rotated Array

We're given an array of integers that looks like the following: js 0, 1, 2, 3, 4, 5, 6, 7, 8 Let's imagine we're an assembly line and we decide to shift some workers around. Say we take our array, and rotate it at a random pivot so that the section after the pivot comes before. Le...

Difficulty: 4/10

Zeros to the End

Write a method that moves all zeros in an array to its end. You should maintain the order of all other elements. Here's an example: js zerosToEnd 1, 0, 2, 0, 4, 0 1, 2, 4, 0, 0, 0 Here's another one: js zerosToEnd 1, 0, 2, 0, 4, 0 1, 2, 4, 0, 0, 0 F...

Difficulty: 5/10

Implement a Linked List

Let's implement a linked list, a data structure that serves as one of the fundamental building blocks of many other data structures. A **linked list** is defined as a linear data structure where each element is a separate object. Each element we will call it a node of a list is comprisi...

Difficulty: 4/10

Graph Algorithms

**Unlock Your Full Potential with AlgoDaily!** We hope you're enjoying this course. At AlgoDaily, our aim is to transform complex coding challenges into engaging, bite sized lessons. And while our free lessons give you a glimpse of this transformative experience, there's so much more in store. ...

Difficulty: 5/10

GitHub Integration

Introduction to GitHub GitHub is a web based platform used for version control and collaboration in software development projects. Importance of GitHub As a senior engineer, you already have experience with version control systems like git. GitHub enhances the capabilities of git by provi...

Difficulty: 5/10

Problem Solving Techniques

Difficulty: 5/10

Interview Reports

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People at Quora Say

This information was sourced from reviews originally posted on Glassdoor.

Smart colleagues, fast user growth, great career growth

The people at Quora are extremely talented and smart, but what's really great is that people really care about their work. I've never worked at a place before where so many people love the product and what they do.

A healthy non-competitive culture where collaboration and mentorship are encouraged. This makes it easier to learn faster from more experienced team members, and for more experienced team members to develop mentorship and leadership skills. A lot of opportunities to work on high impact scaling challenges to scale the infrastructure, product experience, and organization as a whole.