12. Heap (Priority Queue)

1.Kth Largest Element in a Stream

2.Last Stone Weight

3.Relative Ranks

4.Kth Largest Element in an Array

5.Top K Frequent Elements

6.K Closest Points to Origin

7.Task Scheduler

8.Reorganize String

9.Top K Frequent Words

10.Design Twitter

11.Kth Smallest Element in a Sorted Matrix

12.Furthest Building You Can Reach

13.Find Median from Data Stream

14.IPO

15.Smallest Range Covering Elements from K Lists