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beginnerData Structures & Algorithms~55 min

Stacks & Queues

Master stacks and queues by building them from scratch and applying them to real problems: LIFO and FIFO containers, balanced-bracket parsing, a queue made of two stacks, an O(1) MinStack, and a monotonic stack for next-greater-element.

5 steps
  1. 1Build a Stack (LIFO)
  2. 2Balanced Brackets Checker
  3. 3Queue from Two Stacks (FIFO)
  4. 4MinStack with O(1) get_min
  5. 5Monotonic Stack: Next Greater Element
Start Step 1