Important Patterns in Heap/Priority Queue with link to problems.

Common heap problems and patterns

Top K frequent patterns/ heaps + hashmap
347 . https://leetcode.com/problems/top-k-frequent-elements/
692. https://leetcode.com/problems/top-k-frequent-words/
451. https://leetcode.com/problems/sort-characters-by-frequency/
K closest Pattern
658. https://leetcode.com/problems/find-k-closest-elements/
973. https://leetcode.com/problems/k-closest-points-to-origin/
Other heap patterns
621. https://leetcode.com/problems/task-scheduler/
295. https://leetcode.com/problems/find-median-from-data-stream/
1642. https://leetcode.com/problems/furthest-building-you-can-reach/
630. https://leetcode.com/problems/course-schedule-iii/
1046. https://leetcode.com/problems/last-stone-weight/
1337. https://leetcode.com/problems/the-k-weakest-rows-in-a-matrix/
Kth largest/smallest
215. https://leetcode.com/problems/kth-largest-element-in-an-array/
378. https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix/

https://leetcode.com/problems/top-k-frequent-words/discuss/2773643/java-6ms-beats-95-with-explanation-hashmap-priorityqueue-min-max-heap-solution.

Will update the list again