Opendoor Interview Questions

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Sum of Perfect Squares

A perfect square is a number made by squaring a whole number. Some examples include 1 , 4 , 9 , or 16 , and so on because they are the squared results of 1 , 2 , 3 , 4 , etc. For example: 1 2 1 2 2 4 3 2 9 4 2 16 ... However, 15 is not a perfect square, bec...

Difficulty: 7/10

Detect Substring in String

How would you write a function to detect a substring in a string? If the substring can be found in the string, return the index at which it starts. Otherwise, return 1 . js function detectSubstring str, subStr return 1 Important do not use the native String clas...

Difficulty: 4/10

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

Delete Nodes From A Linked List

Now that we've implemented a linked list challenges implement a linked list , can you write a method that will delete all nodes of a given value? You're given the following standard structure as the definition of a linked list node: js class LinkedListNode constructor val ...

Difficulty: 4/10

Is A Subsequence

Given two strings, one named sub and the other str , determine if sub is a subsequence of str . js const str "barbell" const sub "bell" isASubsequence sub, str true For the sake of the exercise, let's assume that these strings only have lower case characters. W...

Difficulty: 5/10

Shortest Path Distance in Matrix

You are given a 2D matrix with several characters contained in its cells. You will also have two distinct characters which are guaranteed to be in the given matrix. Your job will be to find the minimum manhattan distance lessons what is the manhattan distance between the two characters in the mat...

Difficulty: 8/10

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

Two Stack Queue

Building a Queue with Two Stacks: A Challenge in Engineering Elegance The Objective: Queue with Stacks In this challenge, your task is to implement a queue using two stacks. While many programming languages offer queues through arrays or lists, we're restricting our approach to only utilize ...

Difficulty: 6/10

Counting Univalued Subtrees

Question Can you count all the univalued subtrees in a binary tree, as shown in the figure below? The Problem We are given a binary tree. The challenge is to count all the univalued subtrees in the tree. Just to recall, a subtree is any node along with its descendants. The root...

Difficulty: 6/10

Bottom-Up Dynamic Programming

**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

Greedy Algorithms

Difficulty: 5/10

Understanding the Low-Level Details

Welcome, senior engineer. You've comfortably navigated the world of JavaScript, HTML, and CSS. Maps of strengths and weaknesses sewed together, individual threads picked up one after the other throughout your journey in the realm of web development. Now, you've arrived at the door of WebAssembly, a...

Difficulty: 5/10

Interview Reports

opendoor Interview Questions & Answers | Indeed.com...

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People at Opendoor Say

This information was sourced from reviews originally posted on Glassdoor.

I get to work on a product that I think is actually really great with people I enjoy. The benefits are solid. Company culture is something that is being worked toward in genuine ways rather than typical startup "here's a ping-pong table" band-aids. I feel comfortable speaking up when I see issues and listened to when I do so.

Hard work is rewarded. I got several raises, bonuses, and promotions in my first two years at Opendoor. I just received a $7000 bonus for working hard during COVID-19.

Interesting domain. Lots of interesting challenges. They're just disrupting the tip of the iceberg. Financial potential is huge.

Strong leadership team, customer-focused, ambitious. SF office is very nice and in good location. High quality people, healthy corporate culture, performance oriented.