Algorithms & Data Structures
Intermediate
Pro
Stacks
Master the LIFO pattern behind matching, parsing, and monotonic scans
35 min read
0 views
Learn how a simple last-in-first-out stack powers a huge class of interview problems: balancing brackets, evaluating expressions, and finding the next greater element in linear time. This subject builds the core stack toolkit and extends it to the monotonic stack and monotonic deque, two techniques that turn O(n^2) brute-force scans into O(n) passes.