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Data Structures
Stacks & Monotonic Stacks
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Arrays & Prefix Sums
0/50
Stacks & Monotonic Stacks
0/40
1
Intro
2
Vocabulary - Stack
3
Stack Visualization
4
Stack Implementation
5
Where Stacks Shine
6
The Matching Problem
7
Problem - Valid Parentheses
8
Valid Parentheses - Algorithm
9
Valid Parentheses - Implementation
10
Lessons from Valid Parentheses
11
Quiz: Stack Basics
12
A Harder Problem
13
Vocabulary - Monotonic Stack
14
Why Monotonic Works
15
Monotonic Stack Visualization
16
Problem - Next Greater Element I
17
Next Greater - Algorithm
18
Next Greater - Implementation
19
Lessons from Next Greater
20
Quiz: Monotonic Stack
21
Problem - Daily Temperatures
22
Daily Temperatures - The Idea
23
Daily Temperatures - Implementation
24
Lessons from Daily Temperatures
25
A Famous Problem
26
Histogram - Key Observation
27
Histogram - The Approach
28
Histogram - Visualization
29
Histogram - Why It Works
30
Histogram - Implementation
31
Lessons from Histogram
32
Quiz: Histogram
33
Monotonic Stack Variants
34
Previous vs Next
35
Recognizing Stack Problems
36
Problem - Trapping Rain Water
37
Trapping Water - Stack Approach
38
Trapping Water - Implementation
39
Quiz: Stack Problem Types
40
Section Recap
Queues & Deques
0/38
Hash Tables
0/40
Heaps & Priority Queues
0/43
Linked Lists
0/36
Binary Trees
0/35
Binary Search Trees
0/35
Tries
0/35
Union-Find
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Segment Trees
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Fenwick Trees
0/35
Sparse Tables
0/35
Sqrt Decomposition
0/42
Advanced Trees
0/42
Interval Trees
0/40
Wavelet Trees
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Link-Cut Trees
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Persistent Data Structures
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2.1
Intro
2 minutes
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Tasks
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