Beat the Codility Coding Interview in JavaScript

Learn and practice how to solve many coding puzzles from Codility using JavaScript

4.70 (122 reviews)
Udemy
platform
English
language
Software Engineering
category
instructor
665
students
6.5 hours
content
Apr 2021
last update
$54.99
regular price

What you will learn

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

Description

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 course will also help you for onsite and phone coding interviews.

The key to passing these 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 will 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. There is a good mixture of puzzles with different levels of difficulty.

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/CodilityInJavaScript

Content

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 Part 1
Disc Intersection Code Walkthrough Part 2

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

Greedy Algorithms

What's a Greedy Algorithm like?
Max Non Overlapping Segments Problem
Max Non Overlapping Segments Hint
Max Non Overlapping Segments Solution
Max Non Overlapping Segments Walkthrough
Tie Ropes Problem
Tie Ropes Hint
Tie Ropes Solution
Tie Ropes Walkthrough

Closing Note

Thank You!

Screenshots

Beat the Codility Coding Interview in JavaScript - Screenshot_01Beat the Codility Coding Interview in JavaScript - Screenshot_02Beat the Codility Coding Interview in JavaScript - Screenshot_03Beat the Codility Coding Interview in JavaScript - Screenshot_04

Reviews

TaLoveous
June 24, 2022
Using the first example, of Perm Missing, you are using A.length but in Codility you are asked to use 1...1000. Also, I found an easier solution: function solution(A){ for(let i=0; i<1000; i++){ if(!A.includes(i+1)){ return i+1 } } }
Dave
March 4, 2022
The course is pretty good, and helpful, but it only contains some of the Codility problems. So, the other half of the questions that I'm working on I still need to go find somewhere else online.
Frank
February 14, 2022
Excellent explanations for solving Codility tasks and for coding test practice (with hints). The course covers 17 of the Codility Lessons. With each of the covered lessons, the instructor provides a well-structured guide to help to visualize and analyze the task, hints to help consider approaches better solutions, and a step-by-step walkthrough of his solution code. Each of the Codility Lesson Section suggests various solution patterns and the instructor has selected one or two tasks from each Section that re-enforce those patterns.
Klem
October 21, 2021
I previously failed two coding interviews due to not being strong enough at data structures and algorithms. I hope to do better after this course. So far feels great!

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3960606
udemy ID
4/5/2021
course created date
4/19/2021
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