Completed
4 episodes
~ 56 min total read
Algorithm Interview 2026: Data Structures — Know Your Tools
Episodes
4 items • ~56 min-
1
Arrays & Strings: The Interview Bread and Butter
NewArrays and strings appear in 40%+ of interviews and hide surprising complexity. Master prefix sums, sliding windows, two pointers, and in-place tricks that turn O(n²) into O(n).
Published Mar 10, 2026 • 15 min read -
2
Hash Maps & Hash Sets: Turn O(n²) Into O(n) Every Time
NewThe hash map improves interview performance more than any other structure. Learn how it works, when O(1) breaks, and the 5 patterns covering 80% of hash-related problems.
Published Mar 10, 2026 • 15 min read -
3
Linked Lists: The Data Structure That Trips Everyone Up
NewLinked lists look simple until live pressure hits. Master reversal, cycle detection, the runner technique, and merging — with the mental model that kills null pointer errors.
Published Mar 11, 2026 • 13 min read -
4
Stacks & Queues: Simple to Learn, Sneaky to Master
NewStacks feel easy until the interviewer asks for a queue using two stacks. Learn the monotonic stack, deque patterns, and the BFS connection that unlocks hard O(n) solutions.
Published Mar 11, 2026 • 13 min read