Data structures and algorithms remain the single highest-leverage filter in engineering hiring. This course teaches the patterns interviewers actually use, not a tour of every exotic structure: Big-O fluency and constraint budgets, two pointers and sliding windows, hashing and monotonic stacks, linked-list surgery, trees and BSTs, heaps and greedy proofs, graph templates (BFS, DFS, Dijkstra, topological sort), and a dynamic-programming recipe that turns "hard" problems into state-recurrence work. A final lesson covers the 45-minute interview conversation itself — clarify, example, brute force, optimize, code, test.

Four modules, eight lessons on the nine-step standard: objective, hook, concept, worked example, practice, common mistakes, exam angle, server-graded quiz and revision summary. A 30-question bank feeds the timed final; passing earns a verifiable TieEdu certificate.

**Who this is for:** students preparing for campus placements, off-campus OAs and interviews at product and service companies. Assumes you can write basic code in any language; every pattern is shown with complexity and edge cases called out.

**What you need:** a language you can code in during practice. No prior competitive programming is required.

Courses for CSE students

DSA Mastery for Interviews