Lesson overview · Free interview practice

Top K Elements

Find the top K elements in a collection.

Topics in the full lesson
  • Concept and Use Cases
  • When to Use
  • Time and Space Complexity
  • Finding the K Largest Elements
  • Finding the K Most Frequent Elements

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CodingEasy

Kth Largest Element in a Stream

Question

Design an algorithm to efficiently determine the kth largest element from a constantly changing stream of numbers.

Take a moment to think about this before revealing the answer

Explain your reasoning or try an implementation before comparing answers.

Practice on LeetCode
CodingMedium

Top K Frequent Elements

Question

Given an integer array nums and an integer k, return the k most frequent elements. You may return the answer in any order.

Take a moment to think about this before revealing the answer

Explain your reasoning or try an implementation before comparing answers.

Practice on LeetCode
CodingMedium

Kth Smallest Element in a Sorted Matrix

Question

Given a sorted matrix and a target k, find the kth smallest element within the matrix.

Take a moment to think about this before revealing the answer

Explain your reasoning or try an implementation before comparing answers.

Practice on LeetCode

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