Introduction to Top K Elements
Explore the top K elements pattern to efficiently identify the largest, smallest, or most frequent elements in unsorted collections. Learn to use min and max heaps to optimize time complexity, understand when this pattern is applicable, and see real-world examples from ride-sharing to social media analytics.
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About the pattern
The top k elements pattern is an important technique in coding that helps us efficiently find a specific number of elements, known as , from a set of data. This is particularly useful when we’re tasked with identifying the largest, smallest, or most/least frequent elements within an unsorted collection.
To solve tasks like these, one might think to sort the entire collection first, which takes time, and then select the top k elements, taking additional ...