Monotonic Stack
Everything on SkillVeris tagged Monotonic Stack — collected across the glossary, study notes, blog, and cheat sheets.
6 resources across 1 library
Interview Questions(6)
How Do You Solve the Trapping Rain Water Problem?
The Trapping Rain Water problem, given an array of bar heights, is solved optimally with a two-pointer approach in O(n) time and O(1) space: water trapped abov…
Next Greater Element: How Do You Solve It?
The next greater element problem is solved with a monotonic decreasing stack: scan the array left to right keeping the stack's values in decreasing order, and…
What is the Monotonic Stack Technique?
A monotonic stack is a stack that is kept either strictly increasing or strictly decreasing from bottom to top by popping any element that would violate that o…
How Would You Design a Min Stack?
A min stack supports push, pop, top, and getMin all in O(1) by maintaining a second, auxiliary stack that tracks the minimum value at each point in the main st…
How Do You Solve Largest Rectangle in Histogram?
The largest rectangle in histogram problem finds the maximum-area rectangle that fits under a sequence of bars, solved optimally in O(n) time using a monotonic…
What is a Cartesian Tree and What Is It Used For?
A Cartesian tree is a binary tree built from a sequence of values where an in-order traversal recovers the original sequence order, and simultaneously the tree…