11 Essential Coding Interview Questions + Coding Exercises!
4.5 (2,851 ratings)
Course Ratings are calculated from individual students’ ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately.
10,683 students enrolled

11 Essential Coding Interview Questions + Coding Exercises!

Learn 3 handy problem solving techniques. Get 11 hand-picked problems. Get ready for your next coding interview!
Bestseller
4.5 (2,851 ratings)
Course Ratings are calculated from individual students’ ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately.
10,683 students enrolled
Created by YK Sugi
Last updated 8/2019
English
English [Auto-generated], Portuguese [Auto-generated], 1 more
  • Spanish [Auto-generated]
Current price: $48.99 Original price: $69.99 Discount: 30% off
5 hours left at this price!
30-Day Money-Back Guarantee
This course includes
  • 2 hours on-demand video
  • 1 article
  • 24 downloadable resources
  • 22 coding exercises
  • Full lifetime access
  • Access on mobile and TV
  • Certificate of Completion
Training 5 or more people?

Get your team access to 4,000+ top Udemy courses anytime, anywhere.

Try Udemy for Business
What you'll learn
  • Learn what a coding interview is like
  • Learn 3 problem solving techniques you'll be able to use in your next coding interview!
  • Go through 11 of the most essential coding interview questions, coding exercises and answers!
  • Overall, feel more confident and be ready for your next coding interview
Course content
Expand all 35 lectures 02:06:09
+ Arrays
6 lectures 14:31
Most Frequently Occurring Item in an Array (Python)
1 question
Most Frequently Occurring Item in an Array (Java)
1 question
Most Frequently Occurring Item in an Array (Solution)
03:39
Common Elements in Two Sorted Arrays (Python)
1 question
Common Elements in Two Sorted Arrays (Java)
1 question
Common Elements in Two Sorted Arrays (Solution)
03:37
Is One Array a Rotation of Another? (Difficulty = **)
01:06
Is One Array a Rotation of Another? (Python)
1 question
Is One Array a Rotation of Another? (Java)
1 question
Is One Array a Rotation of Another? (Solution)
04:10
+ Strings
5 lectures 14:28
Non-Repeating Character (Difficulty = **)
00:47
Non-Repeating Character (Python)
1 question
Non-Repeating Character (Java)
1 question
Non-Repeating Character (Solution)
02:48
One Away Strings (Difficulty = ***)
02:17
One Away Strings (Python)
1 question
One Away Strings (Java)
1 question
One Away Strings (Solution)
03:05
One Away Strings (Solution in Pseudocode)
05:31
+ Two-Dimensional Arrays
9 lectures 44:49
Assign Numbers in Minesweeper (Difficulty = **)
02:10
Assign Numbers in Minesweeper (Python)
1 question
Assign Numbers in Minesweeper (Java)
1 question
Assign Numbers in Minesweeper (Solution)
04:46
Find Where to Expand in Minesweeper (Difficulty = ***)
03:35
Find Where to Expand in Minesweeper (Python)
1 question
Find Where to Expand in Minesweeper (Java)
1 question
Find Where to Expand in Minesweeper (Solution)
10:52
Find Where to Expand in Minesweeper (Solution in Pseudocode)
04:23
Rotating 2D Array (Difficulty = ***)
01:19
Rotating a 2D Array by 90 Degrees (Python)
1 question
Rotating a 2D Array by 90 Degrees (Java)
1 question
Rotating 2D Array (Out-of-Place Solution)
05:20
Rotating 2D Array (In-Place Solution)
07:05
Rotating 2D Array (In-Place Solution in Pseudocode)
05:19
+ Linked Lists and Trees
8 lectures 36:38
N-th Element of a Linked List (Difficulty = **)
02:29
N-th Element of a Linked List (Python)
1 question
N-th Element of a Linked List (Java)
1 question
N-th Element of a Linked List (Solution)
05:07
Is This a Binary Search Tree? (Difficulty = **)
03:08
Is This a Binary Search Tree? (Python)
1 question
Is This a Binary Search Tree? (Java)
1 question
Is This a Binary Search Tree? (Solution)
02:43
Is This a Binary Search Tree? (Solution in Pseudocode)
05:05
Lowest Common Ancestor (Difficulty = ***)
03:24
Lowest Common Ancestor (Python)
1 question
Lowest Common Ancestor (Java)
1 question
Lowest Common Ancestor (Solution)
07:01
Lowest Common Ancestor (Solution in Pseudocode)
07:41
+ Conclusion
2 lectures 01:03
Conclusion
00:26
Have any extra problems I should solve?
00:37
Requirements
  • You should be familiar with at least one C-like programming language (could be Java, Python, C++, Ruby, JavaScript, etc.)
  • You should be familiar with basic data structures such as arrays, hash tables, linked lists, trees, and graphs
  • You should be familiar with the Big O notation
Description

As you prepare for your next coding interview, have you ever thought:

  • "I wish someone could just walk me through these problems and explain what’s going on."
  • "I wish there was a preselected set of the most important coding interview problems so I can practice them easily."

If so, this course is for you!


In this course:

  • First, I’m going to give you a few problem solving techniques you’ll be able to use right away in your next coding interview.
  • Then, I’m going to walk you through the 11 essential coding interview questions and their answers.
  • I’ve picked these particular questions because they are the types of questions that are asked most often in programming interviews.
  • I’m going to cover problems that use concepts such as arrays, strings, two-dimensional arrays, linked lists and trees.
  • You’ll get a coding exercise in Python and Java for each problem, so you can get feedback on your solution right away.
  • If you want to use any other language to follow this course, that’s fine too! Just remember to run your solution on your computer to make sure it works.

This course is intended for intermediate to advanced learners who are preparing for their software engineer programming interviews.

So, I’m going to assume that you’re already familiar with concepts such as:

  • Two dimensional arrays (which are simply arrays of arrays)
  • Breadth first search and depth first search
  • Linked lists and trees

If you think you’re ready for this course, watch the preview videos and see if you can solve those problems!

Who this course is for:
  • Anyone who is currently preparing for coding interviews / programming interviews
  • Anyone who wants to improve their problem solving / coding skills in general (coding interviews are a good way to practice these skills)