Search Coddy's catalog of 106 interactive coding courses for "beginner". Browse hands-on lessons across 15 programming languages, free to start.

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Interview Preparation

Coding Interview Preparation Courses

Data Structures

Data Structures Courses

In this course, you will learn about the Heap data structure (the backbone of priority queues), create a MinHeap from zero using your preferred language, and practice coding challenges with it!

Heaps & Priority Queues - Data Structures Series #7

In this course, you will learn about the Doubly Linked List data structure, create a Doubly Linked List from zero using your preferred language, and practice coding challenges with it!

Doubly Linked List - Data Structures Series #6

In this course, you will learn about the Linked List data structure, create a Linked List from zero using your preferred language, and practice coding challenges with it!

Linked List - Data Structures Series #5

In this course, you will learn about the Hash Table data structure, create a Hash Table from zero using your preferred language, and practice coding challenges with it!

Hash Tables - Data Structures Series #4

In this course you will create amazing "Solar Eclipse" Animation. Showcasing how we can create engaging and functional user interfaces using animation.

Solar Eclipse Animation | HTML/CSS Project

In this course you will practice standard and simple HTML & CSS approaches and create an Instagram Page Clone Project

Instagram Page Clone | Front-End Project

Learn how to efficiently manipulate and transform data using R's built-in functions, base packages and supported packages. Topics include subsetting, merging, reshaping, and aggregating data.

Data Manipulation in R

In this course you will learn about iterators in Python and practice your knowledge, after this course you will be able to master this topic!

Python Iterators

In this course, you will learn about JSON and dive into the json library in Python, and master it!

Python JSON

This course aims to challenge you by creating functions for different scenarios and use cases.

Functions in C++: Building Your Own Functions

Master pointers in C++ using practical examples. Learn memory management, dynamic allocation, and advanced pointer techniques for efficient C++ programming.

C++ Pointers

Put your programming problem solving skills to the test using the exercises with different difficulties in this course. Designed for coders with some prior knowledge of the basic syntax in any programming language. This course is an extension of the first Coding Problems

Coding Problems: Volume 2

In this project you will create a random fact generator using Python with a public API (uselessfacts).

Random Fact Generator - Python Project

In this course you will create a simple Bottom Navigation Bar using HTML and style it using CSS. You will learn how to add simple animation using (:hover) selector in CSS.

Bottom Navigation Bar - HTML/CSS Project

In this course, you will learn  how to use functions in C with examples and challenges.

Functions in C 

Master file handling in C++ with practical lessons on reading, writing, and manipulating files. Learn to efficiently manage text and binary files, handle errors, and apply best practices in real-world applications.

C++ File Handling

In this course you will build an interactive simple calculator using HTML, CSS and JS.

DOM Project - Calculator

Put your programming problem solving skills to learn how to print star patterns range from simple to complex, involving different levels of nested loops, conditional statements, and mathematical calculations. 

Star Pattern Bootcamp

In this course you will learn about different ways of function declaration in JavaScript. From traditional basic function declarations to the modern arrow functions, enhance your coding skills and write cleaner, more efficient JavaScript code!

Function Declarations in JavaScript

Unlock the power of regular expressions in Python with this concise and practical course. Learn to master text searching, pattern matching, and data extraction with real-world examples and hands-on challenges.

RegEx in Python

A set of challenges aimed at improving your thinking and getting more familiar with Golang and its beautiful syntax. The challenges focus on arrays, slices, loops, and conditions.

Golang Challenges - Level 1

In this project, you will create a basic stopwatch using HTML, CSS, and JavaScript.

Stopwatch - HTML/CSS/JS Project

Are you ready for your next coding interview? Test your knowledge and skills with these challenges and be prepared for your next interview, Happy Coding

Interview Coding Challenges - X

In this course, you will learn about Arrays and the most commonly used Array methods in JavaScript and how to use them!

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