Red Hat Interview Questions

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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

Product Except Self

If we are given an array of integers, can you return an output array such that each corresponding input's elements returns the product of the input array except itself? This can be hard to explain, so let's take an array: 1, 2, 4, 16 What we want to return is 128, 64, 32, 8 . This is...

Difficulty: 4/10

Maximum Sum of Absolute Difference of Values and Indices

The Puzzle in Simple Terms You have a list of numbers called A . Your task is to pick two numbers from this list, let's call them A i and A j . Additionally, you will take note of their positions, i and j , in the list. You are to find the biggest result you can get from a specific formu...

Difficulty: 7/10

Flood Fill Paintbucket

Imagine the implementation for the paintbucket feature in Microsoft Paint, or how certain image filters work. You click on a specific pixel on a screen, and every similar colored neighboring pixel would change to your selected color. Let's implement a simpler version of that feature. You're gi...

Difficulty: 7/10

Invert a Binary Tree

Can you invert a binary tree over its vertical axis? This is a famous problem made popular by this tweet: Google: 90 of our engineers use the software you wrote Homebrew , but you can t invert a binary tree on a whiteboard so f**k off. mdash Max Howell mxcl June 10, 2015 Given a binary t...

Difficulty: 7/10

Implement a Graph

Since a graph lessons simple reference to graphs is one of the more difficult data structures to conceptualize in a programmatic 2D manner, let's go ahead and implement it! We'll go with an adjacency list version. Note that there's also the adjacency matrix method which we will cover later....

Difficulty: 4/10

Stock Buy and Sell Optimization

This is a classic technical interview question that I've seen a number of times in real life interviews. Let's say you're given an array of stock prices, with each element being an integer that represents a price in dollars. 10, 7, 6, 2, 9, 4 Each index of the array represents a s...

Difficulty: 5/10

Max Per Level

Given a binary tree, write a method to return an array containing the largest by value node values at each level. In other words, we're looking for the max per level . So for instance, given the following binary tree, we'd get 2, 7, 9 if the method grabbed the correct maxes. js ...

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

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

Project Execution

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Difficulty: 5/10

From Byte to Gigabyte to Petabyte: Understanding Data Size

In this lesson, we will learn about data sizes, with a focus on following key points: 1. How data is represented in computers. 2. Why is it important to know about data sizes? 3. Data sizes in computer systems. You have probably encountered terms professionally or in day to day lif...

Difficulty: 5/10

Interview Reports

What is it like to work at Red Hat? - Quora...

Red Hat Interview Journal : redhat...

17 votes, 37 comments. Hey all, I was asked to document the process of going through the Red Hat interview process and I figured I split it off from …

TOP 250+ Red Hat Linux System Administration Interview Questions and Answer...

250+ Red Hat Linux System Administration Interview Questions and Answers, Question1: How To check the uptime of a Linux Server? Question2: How to check which Redhat version is installed on Server? Que...

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