Toast Interview Questions

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

Bottom Left Node Value

Assume we're using a binary tree lessons an intro to binary trees and search trees in writing a video game via Binary Space Partitioning https: en.wikipedia.org wiki Binary_space_partitioning . We need to identify the bottom left leaf, that is the leftmost value in the lowest row of the bi...

Difficulty: 4/10

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

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

Merge Sorted Linked Lists

Write an algorithm to merge two sorted linked lists and return it as a new sorted list. The new list should be constructed by joining the nodes of the input lists. You may assume the following node definition: js function Node val this.value val this.next null const...

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

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

Next Greater Element in a Circular Array

A circular array challenges next larger in a circular array is one where the next element of the last element is the first element. You know how standard arrays look. Instead of 1, 2, 3, 4 , imagine the following, where after index 7 , we'd move back to index 0 . Can you write ...

Difficulty: 6/10

Least Missing Positive Number

We have an unsorted array of integers such as the following: 0, 3, 1, 2, 1 csharp if len 2 return Math.Max nums 0 , nums 1 In the above example, the minimum number is 2 and the maximum is 3 . If it were sorted, it would look like: 2, 1, 0, 1, 3 csharp ...

Difficulty: 4/10

Graphs

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Difficulty: 5/10

A Dive into the Facebook Newsfeed Architecture

In this lesson, we will learn about the Facebook newsfeed and its architecture. We'll explore these key points: 1. How does the Facebook newsfeed work? 2. We'll see a detailed system design of Facebook's newsfeed system. 3. Algorithms used in the system. Facebook is the most popul...

Difficulty: 5/10

React Router

Introduction to React Router React Router is a library that allows you to handle routing in your React applications. It provides a way to navigate between different pages or views without refreshing the entire page. This is especially useful when building single page applications. React Route...

Difficulty: 5/10

Maze Game

**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

Interview Reports

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People at Toast Say

This information was sourced from reviews originally posted on Glassdoor.

All Pros here - I worked in the DevX Engineering team, they were all amazing people, all willing to help and set you up for success. If you're in need of help, they will give it and be there for you. Really an amazing time, thank you for the opportunity.

Great product, great culture, great leadership. Interesting technology choices. Company is shifting to event-driven architectures which would be a good learning experience.

Cross-team collaboration is a must and everyone is helpful. Other engineers will stop what they're doing to explain their part of the business if you need clarification

The opportunity that we have to become the leader in the restaurant POS industry is the kind that you're lucky to see even once in your career. It remains a privilege to work alongside the incredibly talented team here.