Update maximum-score-words-formed-by-letters.py

Author: kamyu104

Python/maximum-score-words-formed-by-letters.py

@@ -12,19 +12,19 @@ def maxScoreWords(self, words, letters, score):
         :type score: List[int]
         :rtype: int
         """
-        def backtracking(words, word_scores, word_counts, curr, curr_score, count, result):
+        def backtracking(words, word_scores, word_counts, curr, curr_score, letter_count, result):
             result[0] = max(result[0], curr_score) 
             for i in xrange(curr, len(words)):
-                if any(count[c] < word_counts[i][c] for c in word_counts[i]):
+                if any(letter_count[c] < word_counts[i][c] for c in word_counts[i]):
                     continue
                 backtracking(words, word_scores, word_counts, i+1,
-                             curr_score+word_scores[i], count-word_counts[i],
+                             curr_score+word_scores[i], letter_count-word_counts[i],
                              result)
 
         result = [0]
-        count = collections.Counter(letters)    
+        letter_count = collections.Counter(letters)    
         word_counts = map(collections.Counter, words)
         word_scores = [sum(score[ord(c)-ord('a')] for c in words[i])
                        for i in xrange(len(words))]
-        backtracking(words, word_scores, word_counts, 0, 0, count, result)
+        backtracking(words, word_scores, word_counts, 0, 0, letter_count, result)
         return result[0]