Beat the Codility Coding Interview in Java from Udemy

This course has been designed to help you pass your next coding interview. It focuses on puzzles from Codility's training lessons, so if you have an online coding test coming up, this course is perfect for you.

The key to passing coding interviews is to practice as much as possible by solving various types of coding puzzles. In doing so you sharpen your problem solving skills and eventually you will start to see patterns amongst the different coding solutions. You also increase your chances of being asked a problem you’ve already solved.

In this course you’ll get to practice many of these coding puzzles. In every section we introduce the topic, explain the problem and later provide you with a few hints that help solve the puzzle. In the end we arrive at the solution together.

Along the way you'll learn how to ride a motorbike, surf, scuba dive and fly an aeroplane. *

Join me on this course, and let’s get you to pass this interview.

*Not really, however this course is pretty fun regardless.

All code in this course can be found on github, username/project: cutajarj/CodilityInJava

What's inside

Learning objectives

Experience solving many of codility's coding interview puzzles, with problem descriptions, hints and solutions
Learn common problem solving tips ideal for coding interviews

Have a greater chance of passing the coding interview with codility, hackerrank and others
Have a better chance of doing well in a face to face or phone coding interview

Experience solving many of codility's coding interview puzzles, with problem descriptions, hints and solutions
Learn common problem solving tips ideal for coding interviews
Have a greater chance of passing the coding interview with codility, hackerrank and others
Have a better chance of doing well in a face to face or phone coding interview

Syllabus

Introduction

Make most of this course

Useful links and resources

Time Complexity

Quick recap on Complexity Theory

Perm Missing Element Problem

Perm Missing Element Hint 1

Perm Missing Element Hint 2

Perm Missing Element Solution

Perm Missing Element Code Walkthrough

Equilibrium Problem

Equilibrium Hint 1

Equilibrium Hint 2

Equilibrium Solution

Equilibrium Code Walkthrough

Arrays

Refresh your knowledge on Arrays

Cyclic Rotation Problem

Cyclic Rotation Hint

Cyclic Rotation Solution

Cyclic Rotation Code Walkthrough

Counting Elements

What do we mean by Counting Elements?

Frog River One Problem

Frog River One Hint

Frog River One Solution

Frog River One Code Walkthrough

Max Counters Problem

Max Counters Hint 1

Max Counters Hint 2

Max Counters Solution

Max Counters Code Walkthrough

Stacks and Queues

The basics around Stacks and Queues

Brackets Problem

Brackets Hint

Brackets Solution

Brackets Code Walkthrough

Fish Problem

Fish Hint

Fish Solution

Fish Code Walkthrough

Leader

Leader definition and the Dominator Problem

Dominator Hint

Dominator Solution

Dominator Code Walkthrough

Maximum Slice Problem

Introduction to the Maximum Sub Array problem

Max Profit Problem

Max Profit Hint

Max Profit Solution

Max Profit Code Walkthrough

Sorting

Overview of different Sorting Algorithms

Disc Intersection Problem

Disc Intersection Hint

Disc Intersection Solution

Disc Intersection Code Walkthrough

Prefix Sums

How to generate prefix sums

Passing Cars Problem

Passing Cars Hint

Passing Cars Solution

Passing Cars Code Walkthrough

Div Count Problem

Div Count Hint

Div Count Solution

Div Count Code Walkthrough

Primes and Composites

Understanding Primes and Composites

Flags Problem

Flags Hint 1

Flags Hint 2

Flags Solution

Flags Code Walkthrough

Euclidean Algorithm

What's the Greatest Common Divisor Algorithm?

Chocolates By Numbers Problem

Chocolates By Numbers Hint

Chocolates By Numbers Solution

Chocolates By Numbers Walkthrough

Caterpillar method

How does a Caterpillar move?

Count Distinct Slices Problem

Count Distinct Slices Hint 1

Count Distinct Slices Hint 2

Count Distinct Slices Solution

Count Distinct Slices Walkthrough

Min Abs Sum Of Two Problem

Min Abs Sum Of Two Hint 1

Min Abs Sum Of Two Hint 2

Min Abs Sum Of Two Hint 3

Min Abs Sum Of Two Solution

Min Abs Sum Of Two Walkthrough

Greedy Algorithms

What's a Greedy Algorithm like?

Max Non Overlapping Segments Problem

Max Non Overlapping Segments Hint

Max Non Overlapping Segments Solution

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Explores puzzle solving, which is a must-have skill to excel in coding interviews

Taught by James Cutajar, who is an expert in coding interviews

Provides hands-on practice through a wide range of coding puzzles from Codility's training lessons

Suitable for preparing for coding interviews by companies like Codility, Hackerrank, and others

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Beat the Codility Coding Interview in Java with these activities:

Compile a collection of useful resources (e.g., websites, videos, articles) for coding interviews

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Create a centralized repository of resources to support your preparation for coding interviews.

Browse courses on Coding Interviews

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Search for relevant websites, videos, and articles on coding interviews.
Organize the resources into a structured format (e.g., document, spreadsheet).
Include a brief description of each resource and how it can be helpful.

Brush up on your programming skills in the language used for your coding interview

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Ensure your programming skills are sharp and ready for the coding interview by practicing regularly.

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Solve coding problems in the language used for your coding interview.
Review and practice coding concepts and techniques.
Build small programming projects to apply your skills.

Review basic data structures and algorithms

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Strengthen your foundation by reviewing basic data structures and algorithms to prepare for coding interviews.

Browse courses on Data Structures

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Go over lecture notes or textbooks on data structures and algorithms.
Practice implementing basic data structures and algorithms in your preferred programming language.
Solve coding problems using the data structures and algorithms you've reviewed.

Six other activities

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Show all nine activities

Practice solving coding puzzles from Codility

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Practice solving coding puzzles to improve your problem-solving skills and prepare for your coding interview.

Browse courses on Problem Solving

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Choose a puzzle from the Codility training lessons.
Read the puzzle description and understand the problem.
Attempt to solve the puzzle on your own.
Review the hints provided to guide your solution.
Check the solution provided to verify your answer.

Watch video tutorials on common coding interview topics

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Gain additional insights and perspectives by watching video tutorials on common coding interview topics.

Browse courses on Coding Interviews

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Search for video tutorials on specific coding interview topics.
Watch the tutorials and take notes on key concepts.
Practice applying the techniques discussed in the tutorials.
Review your notes and practice regularly to reinforce your understanding.

Join a study group or participate in peer practice sessions

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Collaborate with peers to discuss coding challenges, share strategies, and improve your problem-solving skills.

Browse courses on Coding Interviews

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Identify or form a study group or peer practice session.
Establish regular meeting times and create a structured agenda.
Discuss coding puzzles and practice solving them together.
Provide feedback and support to your peers.

Attend a coding interview preparation workshop

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Gain valuable insights and guidance by attending a coding interview preparation workshop.

Browse courses on Coding Interviews

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Research and identify reputable coding interview preparation workshops.
Enroll in a workshop that aligns with your learning goals.
Actively participate in the workshop discussions and exercises.
Network with other participants and industry professionals.

Create a mock coding interview project (e.g., a sample coding challenge or a resume)

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Demonstrate your coding skills and understanding of the interview process by creating a mock coding interview project.

Browse courses on Interview Preparation

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Choose a coding challenge or scenario that reflects real-world coding interview problems.
Develop a solution using appropriate data structures and algorithms.
Write a detailed explanation and documentation for your solution.
Review and refine your project based on feedback from potential reviewers.

Become a mentor for junior developers or students preparing for coding interviews

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Strengthen your understanding of coding concepts and hone your communication skills by mentoring others.

Browse courses on Mentoring

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Connect with junior developers or students seeking mentorship opportunities.
Offer guidance and support on coding problems and interview preparation.
Provide constructive feedback and encourage their growth.
Foster a positive and supportive learning environment.

Career center

Learners who complete Beat the Codility Coding Interview in Java will develop knowledge and skills that may be useful to these careers:

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Beat the Codility Coding Interview in Java

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What's inside

Learning objectives

Syllabus

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Activities

Career center

Reading list

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