Leetcode Problem 1255. Maximum Score Words Formed by Letters

1255. Maximum Score Words Formed by Letters

Leetcode Solutions

Backtracking with Frequency Counting and Score Calculation

  1. Initialize a variable max_score to keep track of the maximum score found.
  2. Create a frequency map letter_count from the list of letters.
  3. Define a recursive function backtrack that takes the current index i and the current score current_score.
  4. If i is beyond the last index, update max_score with the maximum of max_score and current_score.
  5. Iterate over the words starting from index i to the end.
  6. For each word, check if it can be formed with the remaining letters in letter_count.
  7. If the word can be formed, reduce the counts in letter_count, add the word's score to current_score, and recursively call backtrack with the next index and the updated score.
  8. After the recursive call, restore the counts in letter_count (backtrack).
  9. Also, make a recursive call without including the current word to explore the possibility of skipping it.
  10. Return max_score after exploring all combinations.
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