DSA — Problem Solving & Coding Interviews with Karan Raj

DSA — Problem Solving & Coding Interviews teaches you how to approach programming problems systematically and develop the problem-solving skills required in technical interviews.

Starting with Big O and basic complexity analysis, the book covers arrays, strings, hashing, two pointers, sliding windows, stacks, queues, linked lists, recursion, binary search, sorting, trees, heaps, graphs, greedy algorithms, backtracking, and dynamic programming.

Each topic combines intuition, implementation, examples, complexity analysis, and practice problems. The book also includes a comprehensive collection of interview questions and solutions designed to help you move from understanding algorithms to applying them confidently.