Leetcode Problem 2014. Longest Subsequence Repeated k Times

2014. Longest Subsequence Repeated k Times

Leetcode Solutions

Generating and Checking Subsequences

  1. Count the frequency of each character in s and identify the 'hot' characters that appear at least k times.
  2. Generate all possible subsequences using the 'hot' characters, up to 7 characters long.
  3. Sort the subsequences by length and lexicographical order, in descending order.
  4. Iterate over the sorted subsequences and check if each one is a subsequence of s repeated k times.
  5. Return the first subsequence that meets the criteria, or an empty string if none do.
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Recursive Subsequence Generation and Checking

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