You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
27 lines
1022 B
27 lines
1022 B
---
|
|
id: heap
|
|
title: Heap
|
|
---
|
|
|
|
## Study links
|
|
|
|
- [Learning to Love Heaps](https://medium.com/basecs/learning-to-love-heaps-cef2b273a238)
|
|
|
|
## Notes
|
|
|
|
If you see a top or lowest _k_ being mentioned in the question, it is usually a signal that a heap can be used to solve the problem, such as in [Top K Frequent Elements](https://leetcode.com/problems/top-k-frequent-elements/).
|
|
|
|
If you require the top _k_ elements use a Min Heap of size _k_. Iterate through each element, pushing it into the heap. Whenever the heap size exceeds _k_, remove the minimum element, that will guarantee that you have the _k_ largest elements.
|
|
|
|
## Recommended LeetCode questions
|
|
|
|
- [Merge K Sorted Lists](https://leetcode.com/problems/merge-k-sorted-lists/)
|
|
- [Top K Frequent Elements](https://leetcode.com/problems/top-k-frequent-elements/)
|
|
- [Find Median from Data Stream](https://leetcode.com/problems/find-median-from-data-stream/)
|
|
|
|
## Recommended courses
|
|
|
|
import AlgorithmCourses from '../\_courses/AlgorithmCourses.md'
|
|
|
|
<AlgorithmCourses />
|