Tableau Software Interview Questions

Note: ensure you read the disclaimer on the previous page reading the accuracy and sourcing of these problems.

Implement a Binary Search Tree

Let's implement a Binary Search Tree ! Recall that a binary search tree , or a BST , is a binary tree lessons an intro to binary trees and search trees that is ordered via these two properties: 1. The left sub tree of a node has a value less than or equal to its parent node's value. 2. The ...

Difficulty: 6/10

Single Lonely Number

In a given array of numbers, one element will show up once and the others will each show up twice. Can you find the number that only appears once in O n linear time? Bonus points if you can do it in O 1 space as well. lonelyNumber 4, 4, 6, 1, 3, 1, 3 6 lonelyNumber 3, 3, 9 9...

Difficulty: 3/10

Add Linked List Numbers

We're provided the following two linked lists: 1 2 3 4 and 2 5 8 Each one represents a number in reversed order, so 1 2 3 4 represents 4321 and 2 5 8 represents 852 *note: for an extra challenge, consider if they weren't reversed* . The lists are guarante...

Difficulty: 7/10

Merge Intervals

This is a classic interview question that is used in _a lot_ in technical interviews, frequently in the form of a calendar or meeting management application. As such, we'll also assume the same use case, as it's easier to visualize. Suppose we're given a few arrays, like 1, 4 , 2, 5 , 7,...

Difficulty: 5/10

Implement a Hash Map

Arrays are amazing for looking up elements at specific indices as all elements in memory are contiguous, allowing for O 1 or constant time lookups. But often we don't, or can't, perform lookups via indices. Hash maps and hash tables are a way around this, enabling us to lookup via keys instead. ...

Difficulty: 3/10

Build a Calculator

Let's build a very basic calculator by programming it! You've probably seen one that look similar to this: But we won't be building a physical calculator HardwareDaily will need to wait! instead, we'll be writing a simple program that can serve as one. Can you write a function that will evalua...

Difficulty: 7/10

Matrix Operations

Here's a fun one: let's say we have a 2D array matrix that is a size of m rows and n columns. It is initially prefilled with 0 s and looks like the following: js 0, 0, 0, 0 , 0, 0, 0, 0 , 0, 0, 0, 0 We are then given a list of increment operations to be performed on ...

Difficulty: 7/10

Traverse in a Zig Zag

Here's a fun one: can you write a method to return the nodes of a binary tree lessons an intro to binary trees and search trees in a zig zag level order? It should return a multi dimensional array of arrays, with each child array being a level of the tree. That's a mouthful, so here's an...

Difficulty: 6/10

The Coin Change Problem

If I give you coins of denominations 3, 7, 9 a coin worth 3 cents, a coin worth 7 cents, etc. , can you tell me the minimum number of coins that are needed to make a total of 37 ? You can assume that an infinite supply of all these coins are available to you. This challenge is about so...

Difficulty: 8/10

Best Cloud Platforms for Software Development

Avoiding digital transformation is not an option in the modern world, and it goes especially for the businesses trying to follow all the new digital trends. Cloud computing is crucial for any of those businesses, and it has become much more significant in the past few years. Using such cloud techn...

Difficulty: 5/10

Jobs in Coding: Types of Programmer Career Paths

Career Paths for Software Engineers There tends to be this perception that there isn't much to software engineering other than programming. The belief being, that a person who can code is immediately a software engineer and anyone who can't isn't technical. In this tutorial, we are going t...

Difficulty: 5/10

Introduction to Data Analysis

Introduction to Data Analysis ! https: storage.googleapis.com algodailyrandomassets curriculum Data_Science Introduction 20to 20Data 20Analysis intro.png What is Data Analytics **Data analysis aids the company s success and growth by telling you where to focus your efforts and where to m...

Difficulty: 5/10

People at Tableau Software Say

This information was sourced from reviews originally posted on Glassdoor.

Very nice and helpful coworkers. Very smart people always available to help. Honest feedback and career growth discussions. Lot of flexibility and opportunity to learn and implement new tech. Competitive salary. Yes - free food !! You will work in a niche space that could be good or bad depending on what you want. Keep up the culture as the company grows its very rare to find this. The parties and happy hours here are awesome and is great for employee moral.

Often people say "good work-life balance" when they mean: the work is easy and none of my coworkers are smart than me. Tableau is full of smart people & challenging projects without the fear that if you don't put in well over 40 hours a week, you're in trouble. Writing software to work online and on-prem can be a pain.

Tableau has free food and kitchens that are fully stocked, moral events and all the usual techie perks. They are working on fixing their desktop product which is a huge monolithic piece of code and all in perforce which makes trying to develop rapidly a huge pain. Tableau is feeling the growing pains of going from a little to mid sized company and needs to invest in it's infrastructure in order for it to be able to continue to grow.

Pay is great. Work/Life balance is amazing! Tableau truly seems to care about its employees. They make all kinds of trainings and workshops available to us. Things like leadership training, manager trainings, interview trainings, an amazingly impressive diversity and inclusion training session, trainings on using our actual product. It's beyond what I've seen elsewhere. Employee stock purchase plan is essentially free money. Super flexible with scheduling - although I'd say most all tech companies are like this. I love having access to an actual kitchen to prepare my lunches. The work is interesting and engaging. I'm really happy here. Continue doing a lot of what you're doing. Continue listening to us and empowering us to make changes. Sometimes it feels like we are focusing too broadly. A narrower focus might be more valuable.