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Pattern 22: LeetCode Interview Patterns
Graphs - DFS
Problemset
Discussion
AI Helper
Getting Started
0/5
Hash Map Patterns
0/33
Two Pointers
0/31
Sliding Window
0/33
Prefix Sum
0/32
Binary Search
0/33
Linked List
0/29
Stack Patterns
0/31
Monotonic Stack
0/32
Heap / Priority Queue
0/32
Trees
0/31
Trie
0/32
Backtracking
0/34
Graphs - BFS
0/32
Graphs - DFS
0/36
1
What is Graphs - DFS
2
Prerequisites
3
When to Use
4
When NOT to Use
5
LeetCode 733 Flood Fill - Problem Statement
6
LeetCode 733 Flood Fill - Solution
7
LeetCode 733 Flood Fill - Example and Complexity Analysis
8
LeetCode 733 Flood Fill - Implementation
9
LeetCode 261 Graph Valid Tree - Problem Statement
10
Quiz: Valid Tree Conditions
11
LeetCode 261 Graph Valid Tree - Why Naive Fails
12
LeetCode 261 Graph Valid Tree - Solution
13
LeetCode 261 Graph Valid Tree - Example and Complexity Analysis
14
LeetCode 261 Graph Valid Tree - Implementation
15
LeetCode 417 Pacific Atlantic Water Flow - Problem Statement
16
LeetCode 417 Pacific Atlantic Water Flow - Why Naive Fails
17
LeetCode 417 Pacific Atlantic Water Flow - Solution
18
LeetCode 417 Pacific Atlantic Water Flow - Example and Complexity Analysis
19
LeetCode 417 Pacific Atlantic Water Flow - Implementation
20
LeetCode 695 Max Area of Island - Problem Statement
21
LeetCode 695 Max Area of Island - Solution
22
LeetCode 695 Max Area of Island - Example and Complexity Analysis
23
LeetCode 695 Max Area of Island - Implementation
24
LeetCode 130 Surrounded Regions - Problem Statement
25
LeetCode 130 Surrounded Regions - Why Naive Fails
26
LeetCode 130 Surrounded Regions - Solution
27
LeetCode 130 Surrounded Regions - Example and Complexity Analysis
28
LeetCode 130 Surrounded Regions - Implementation
29
LeetCode 329 Longest Increasing Path in a Matrix - Problem Statement
30
Quiz: DFS with Memoization
31
LeetCode 329 Longest Increasing Path in a Matrix - Why Naive Fails
32
LeetCode 329 Longest Increasing Path in a Matrix - Solution
33
LeetCode 329 Longest Increasing Path in a Matrix - Example and Complexity Analysis
34
LeetCode 329 Longest Increasing Path in a Matrix - Implementation
35
Common Mistakes
36
Section Recap
Topological Sort
0/32
Union Find
0/40
Dynamic Programming - 1D
0/36
Dynamic Programming - 2D
0/32
Intervals
0/31
Greedy
0/40
Bit Manipulation
0/34
Segment Tree
0/27
30-Day LeetCode Study Plan
0/8
15.1
What is Graphs - DFS
2 minutes
100%
Tasks
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