DSA Practice Tests: 600+ MCQs & Interview Prep

Master Data Structures & Algorithms through 600 carefully crafted practice questions spanning everything from array fundamentals to advanced graph theory and complexity analysis.

This course is organized into six free ccie exam mastery 6 comprehensive practice tests 2024 pro 1 course, each with 100 multiple-choice questions. Every question includes a detailed explanation for all four answer options, not just the correct one, so you understand the reasoning behind each concept rather than simply memorizing answers.

Test 1: Arrays, Strings & Two Pointers/Sliding Window — Two-pointer techniques, sliding windows, binary search, hash maps, and classic algorithms like Kadane's and the Dutch National Flag problem.

Test 2: Linked Lists, Stacks & Queues — Fast-and-slow pointers, cycle detection, the LRU cache, monotonic stacks, and stack/queue implementation tradeoffs.

Test 3: Trees, Tries & Graphs — Binary search trees, tree traversal, tries, BFS/DFS, topological sort, union-find, and shortest-path algorithms.

Test 4: Sorting, Searching, Recursion & Backtracking — Merge sort, quicksort, heap sort, N-Queens, Sudoku-solving, and advanced binary search variants.

Test 5: Dynamic Programming — Knapsack, longest common subsequence, interval DP, state-machine DP, and recognizing when greedy shortcuts genuinely apply.

Test 6: Advanced Graphs, Greedy Algorithms & Complexity Analysis — Bellman-Ford, Floyd-Warshall, exchange-argument proofs, NP-completeness, and approximation algorithms.

Whether you're preparing for technical interviews, filling gaps from self-taught learning, or sharpening algorithmic intuition as a working engineer, this course gives you a structured, thorough way to test and deepen your understanding.