Intervals

Problems involving interval manipulation

31 lessons
80 min

Lessons

1. What is Intervals

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 252 Meeting Rooms - Problem Statement

The problem

2m1 problems

6. LeetCode 252 Meeting Rooms - Solution

The core idea

3m

7. LeetCode 252 Meeting Rooms - Example and Complexity Analysis

Walkthrough and analysis

3m

8. LeetCode 252 Meeting Rooms - Implementation

The approach

4m1 problems

9. LeetCode 56 Merge Intervals - Problem Statement

The problem

2m1 problems

10. Quiz: Merging Strategy

Test your understanding

2m1 problems

11. LeetCode 56 Merge Intervals - Why Naive Fails

The trap

2m

12. LeetCode 56 Merge Intervals - Solution

The core idea

3m

13. LeetCode 56 Merge Intervals - Example and Complexity Analysis

Walkthrough and analysis

3m

14. LeetCode 56 Merge Intervals - Implementation

The approach

4m1 problems

15. LeetCode 57 Insert Interval - Problem Statement

The problem

2m1 problems

16. LeetCode 57 Insert Interval - Solution

The core idea

3m

17. LeetCode 57 Insert Interval - Example and Complexity Analysis

Walkthrough and analysis

3m

18. LeetCode 57 Insert Interval - Implementation

The approach

4m1 problems

19. LeetCode 253 Meeting Rooms II - Problem Statement

The problem

2m1 problems

20. Quiz: Counting Concurrent Meetings

Test your understanding

2m1 problems

21. LeetCode 253 Meeting Rooms II - Why Naive Fails

The trap

2m

22. LeetCode 253 Meeting Rooms II - Solution

The core idea

3m

23. LeetCode 253 Meeting Rooms II - Example and Complexity Analysis

Walkthrough and analysis

3m

24. LeetCode 253 Meeting Rooms II - Implementation

The approach

4m1 problems

25. LeetCode 435 Non-overlapping Intervals - Problem Statement

The problem

2m1 problems

26. LeetCode 435 Non-overlapping Intervals - Why Naive Fails

The trap

2m

27. LeetCode 435 Non-overlapping Intervals - Solution

The core idea

3m

28. LeetCode 435 Non-overlapping Intervals - Example and Complexity Analysis

Walkthrough and analysis

3m

29. LeetCode 435 Non-overlapping Intervals - Implementation

The approach

4m1 problems

30. Common Mistakes

Common errors to avoid

2m

31. Section Recap

Summary

1m

Practice Problems

1.
LeetCode 452 - Minimum Number of Arrows to Burst Balloonsleetcodemedium
2.
LeetCode 986 - Interval List Intersectionsleetcodemedium
3.
LeetCode 1229 - Meeting Schedulerleetcodemedium
4.
LeetCode 1288 - Remove Covered Intervalsleetcodemedium
5.
LeetCode 1851 - Minimum Interval to Include Each Queryleetcodehard
6.
LeetCode 2251 - Number of Flowers in Full Bloomleetcodehard
7.
LeetCode 2580 - Count Ways to Group Overlapping Rangesleetcodemedium
8.
LeetCode 2589 - Minimum Time to Complete All Tasksleetcodehard
9.
LeetCode 2712 - Minimum Cost to Make All Characters Equalleetcodemedium
10.
LeetCode 2848 - Points That Intersect With Carsleetcodeeasy
11.
LeetCode 3030 - Find the Grid of Region Averageleetcodemedium
12.
LeetCode 3169 - Count Days Without Meetingsleetcodemedium
13.
LeetCode 3439 - Reschedule Meetings for Maximum Free Timeleetcodemedium

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