Algorithms and Data Structures in Kotlin

The book "Algorithms and Data Structures in Kotlin" is a comprehensive guide for developers seeking to deepen their knowledge in designing efficient algorithms using the modern Kotlin language. The material is aimed both at beginner programmers already familiar with basic syntax and at experienced engineers who want to systematize their knowledge and prepare for technical interviews.

The first part of the book covers fundamental concepts: algorithm complexity analysis (Big O notation), recursion, and iterative approaches. The author systematically examines classic data structures — arrays, linked lists, stacks and queues, trees (binary, AVL, red-black), hash tables, and graphs. Each structure is accompanied by an implementation in Kotlin, taking into account language idioms such as extension functions, data classes, and coroutines.

The second part is devoted to algorithms: sorting (quicksort, mergesort, timsort), searching (binary, interpolation), graph algorithms (BFS, DFS, Dijkstra, A*), dynamic programming, and greedy algorithms. Special attention is paid to practical examples: data parsing, working with large volumes, optimizing database queries and network protocols.

Key features of the book:

• Practical focus — each algorithm is illustrated with ready-made Kotlin code, including tests and benchmarks.
• Modern approaches — using Kotlin's functional capabilities (lambdas, sequences, collections) for concise solutions.
• Interview preparation — over 50 problems with analysis of typical solutions and common mistakes.
• Performance — tips for profiling and optimizing code for JVM and Android.
• Graphical explanations — flowcharts and diagrams to visualize the operation of complex algorithms.

The reader will learn to choose the appropriate data structure for a specific task, analyze time and space complexity, and write clean, maintainable code. The book will be useful for Android developers, backend engineers using Kotlin/JVM, and anyone who wants to transition to Kotlin from Java or other languages.

"Algorithms and Data Structures in Kotlin" is not just a reference book, but a practical guide that will help you become a confident developer capable of solving problems of any complexity. All examples are available in a GitHub repository and have been tested on current versions of Kotlin (1.9+).