Advanced Greedy

3. Huffman - Algorithm

Build the tree

4. Huffman - Implementation

The code

5. Problem - Reorganize String

No adjacent duplicates

6. Reorganize String - Algorithm

Max-heap approach

7. Reorganize String - Implementation

The code

8. Quiz: Reorganize String

Feasibility check

9. Problem - Remove K Digits

Minimize the number

10. Remove K Digits - Algorithm

Stack-based greedy

11. Remove K Digits - Implementation

The code

12. Remove K Digits - Why Greedy

Local removal helps globally

13. Quiz: Remove K Digits

Understanding the stack

14. Problem - Create Maximum Number

Merge two arrays

15. Create Maximum - Subproblems

Three greedy steps

16. Create Maximum - Max from One Array

Monotonic stack selection

17. Create Maximum - Merge Step

Lexicographic comparison

18. Create Maximum - Full Solution

Putting it together

19. Problem - Patching Array

Cover all sums

20. Patching Array - The Idea

Extend the range

21. Patching Array - Implementation

The code

22. Quiz: Patching Array

Why add miss

23. Problem - Candy Crush

Eliminate matches

24. Candy Crush - Algorithm

Mark, crush, drop

25. Candy Crush - Implementation

The code

26. Problem - Minimum Number of Arrows

Burst all balloons

27. Arrows - Greedy Insight

Activity selection variant

28. Arrows - Implementation

The code

29. Quiz: Arrows vs Activity Selection

Spotting the connection

30. Problem - Minimum Increment to Make Array Unique

No duplicates

31. Make Unique - Greedy Approach

Sort and fix

32. Make Unique - Implementation

The code

33. Advanced Greedy Patterns

Common themes

34. When Greedy Gets Tricky

Pitfalls to watch

35. Quiz: Advanced Greedy

Choosing the right approach