Citadel Interview Questions

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

Fizz Buzz

Fizz Buzz is a classic interview question that apparently many experienced engineering candidates often can't solve! Let's cover it today. We're given a number in the form of an integer n . Write a function that returns the string representation of all numbers from 1 to n based on the followin...

Difficulty: 3/10

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

Find Duplicate Words

A very common interview challenge is to determine how often words appear in a given string or set of strings. Here's a version of this: return a list of duplicate words in a sentence. For example, given 'The dog is the best' , returns "the" . Likewise, given 'Happy thanksgiving, I am s...

Difficulty: 4/10

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

How Deep Does It Go? Maximum Depth of Binary tree

Write a method to determine how deep a binary tree lessons an intro to binary trees and search trees goes. The tree's depth can be described as the number of nodes you encounter as you traverse from the root node to a leaf . The root node is the topmost node, and a leaf is a node wi...

Difficulty: 6/10

Detect An Undirected Graph Cycle

Can you detect a cycle in an undirected graph? Recall that an undirected graph lessons simple reference to graphs is one where the edges are bidirectional. A cycle is one where there is a closed path, that is, the first and last graph lessons simple reference to graphs vertices can be the...

Difficulty: 9/10

Count the Planes

Assume that we are building software to determine how many planes are in the sky. The data that we have on planes currently in the air comes in the form of a grid, modeled by a matrix array. See below: '.', '.', '.', 'P' , '.', '.', '.', 'P' , 'P', 'P', '.', 'P' , '.', '.', '.',...

Difficulty: 5/10

JavaScript Array Methods

Introduction to JavaScript Array Methods JavaScript arrays are powerful data structures that allow you to store multiple values in a single variable. They are widely used in JavaScript programming and are essential for manipulating and working with collections of data. JavaScript provides a va...

Difficulty: 5/10

Introduction to Programming

Introduction to Programming Programming is a powerful skill that allows us to create and automate tasks, solve problems, and build useful applications. It is a way of giving instructions to a computer to perform specific tasks. Imagine you have a robot. In order for the robot to understand wha...

Difficulty: 5/10

Best Text Editors for Software Engineering

Text editors and IDEs are probably the most important tools when it comes to software engineering. They help to improve your productivity, and they can make your job easier by implementing text predictions, plugins, git integrations and so on. The best code editors offer a fast, flexible interfa...

Difficulty: 5/10

Numbers Everywhere! From Phones to Cars

Still generating... This lesson is currently still being generated, please wait... thanks! **Please refresh in a minute or two to see updates.** ...

Difficulty: 5/10

SQL Aggregate Functions

Aggregate Functions Introduction SQL is very often used for gathering and expressing the data in a summary form. This process is known as **data aggregation** and is conducted with the help of several **aggregate functions**. In short, _an SQL aggregate function outputs a single value by comp...

Difficulty: 5/10

Interview Reports

What is it like to work at Citadel? - Quora...

How to get a job at Citadel, by a member of its portfolio committee | eFina...

"My favorite thing about working for Citadel is winning. I love working with the best and brightest people and I love competing."

Citadel Interview Questions in Chicago, IL | Glassdoor...

Citadel interview details in Chicago, IL: 129 interview questions and 104 interview reviews posted anonymously by Citadel interview candidates.

People at Citadel Say

This information was sourced from reviews originally posted on Glassdoor.

Intelligent peers. I worked at both FAANG and Citadel and I have to say that my peers are Citadel are extraordinarily smart, helpful, and dedicated.

Citadel is a fast-paced work environment that prides itself on winning and meritocracy. If you're a highly driven individual confident in your abilities, you can make a significant impact in a short period of time. Citadel is an amazing place to create your own space -- if you work hard enough on something you think is important, Citadel will likely reward you with the resources to make further improvements.

You have to be here to know what's really like to be a part of the best investment management firm in the world. I am really motivated by the extreme emphasis on meritocracy and a lack of political games. Everyone is laser-focused on getting things done, better, faster and in the right way. If you're someone that has a great attention to details and strong drive to deliver business value, there is no better place where you can bring your talent and grow your career.

Working on some of the most exciting and challenging problems. Usually, good teamwork and opportunities to grow and take on more responsibility. Seems the culture has really changed over the past 2-3 years