Segment Tree
Problems using segment tree data structure
27 lessons
71 min
Lessons
1. What is Segment Tree
Pattern overview
2m
2. Prerequisites
What you need first
1m
3. When to Use
Pattern triggers
2m
4. When NOT to Use
Avoid forcing this pattern
2m
5. LeetCode 307 Range Sum Query - Mutable - Problem Statement
The problem
2m1 problems
6. Quiz: Segment Tree Advantage
Test your understanding
2m1 problems
7. LeetCode 307 Range Sum Query - Mutable - Solution
The core idea
3m
8. LeetCode 307 Range Sum Query - Mutable - Implementation
The approach
4m1 problems
9. LeetCode 315 Count of Smaller Numbers After Self - Problem Statement
The problem
2m1 problems
10. Quiz: Processing Order
Test your understanding
2m1 problems
11. LeetCode 315 Count of Smaller Numbers After Self - Why Naive Fails
The trap
2m
12. LeetCode 315 Count of Smaller Numbers After Self - Solution
The core idea
3m
13. LeetCode 315 Count of Smaller Numbers After Self - Implementation
The approach
4m1 problems
14. LeetCode 327 Count of Range Sum - Problem Statement
The problem
2m1 problems
15. LeetCode 327 Count of Range Sum - Why Naive Fails
The trap
2m
16. LeetCode 327 Count of Range Sum - Solution
The core idea
3m
17. LeetCode 327 Count of Range Sum - Implementation
The approach
4m1 problems
18. LeetCode 493 Reverse Pairs - Problem Statement
The problem
2m1 problems
19. LeetCode 493 Reverse Pairs - Why Naive Fails
The trap
2m
20. LeetCode 493 Reverse Pairs - Solution
The core idea
3m
21. LeetCode 493 Reverse Pairs - Implementation
The approach
4m1 problems
22. LeetCode 2407 Longest Increasing Subsequence II - Problem Statement
The problem
3m1 problems
23. LeetCode 2407 Longest Increasing Subsequence II - Why Naive Fails
Why brute force fails
3m
24. LeetCode 2407 Longest Increasing Subsequence II - Solution
The pattern
4m
25. LeetCode 2407 Longest Increasing Subsequence II - Implementation
The code
5m1 problems
26. Common Mistakes
Common errors to avoid
2m
27. Section Recap
Summary
1m
Practice Problems
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