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Solution: Top K Frequent Words

Explore how to solve the problem of finding the top k frequent words by combining a trie with bucket sort. This lesson helps you understand frequency mapping, storing words by frequency using tries, and lexicographical sorting for words with equal frequency, while analyzing time and space complexity.

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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