Heap and Priority Queue

1.Kth Largest Element in an Array2.Kth Largest Element in a Stream3.Top K Frequent Elements4.Kth Smallest Element in a Sorted Matrix7. Find Median from Data Stream8. Maximum Average Pass Ratio9. Longest Happy String10. K Closest Points to Origin11. Reorganize String12. Find the Kth Largest Integer in the Array13. Smallest range in K lists