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Solution: Top K Frequent Words

Explore how to solve the problem of finding the top k frequent words from a list by using tries for organized word storage and bucket sort for frequency grouping. Understand the implementation details, time and space complexity, and how sorting is handled both by frequency and lexicographical order.

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Statement

Given a list of strings words and an integer k, return the k most frequently occurring strings.

Note: The result should be sorted in descending order based on frequency. If multiple words have the same frequency, they should be sorted in lexicographical order.

Constraints:

  • 1≤1 \leq words.length ≤100\leq 100

  • 1≤1 \leq words[i].length ≤10\leq 10

  • 1≤1 \leqk ≤\leq number of unique words in the list

  • words[i] consists of lowercase English letters. ...

Solution