Heaps [Learning, Medium, Hard Problems]

Learning

#	Problem	Links	Status	Action
1	Introduction to Priority Queues using Binary Heaps			Solve
2	Min Heap and Max Heap Implementation			Solve
3	Check if an array represents a min-heap or not			Solve
4	Convert min Heap to max Heap			Solve

Medium Problems

#	Problem	Links	Status	Action
1	Kth largest element in an array [use priority queue]			Solve
2	Kth smallest element in an array [use priority queue]			Solve
3	Sort K sorted array			Solve
4	Merge M sorted Lists			Solve
5	Replace each array element by its corresponding rank			Solve
6	Task Scheduler			Solve
7	Hands of Straights			Solve

Hard Problems

#	Problem	Links	Status	Action
1	Design twitter			Solve
2	Connect `n` ropes with minimal cost			Solve
3	Kth largest element in a stream of running integers			Solve
4	Maximum Sum Combination			Solve
5	Find Median from Data Stream			Solve
6	K most frequent elements			Solve