Leetcode 837 Solution

This article provides solution to leetcode question 837 (most-common-word)

https://leetcode.com/problems/most-common-word

Solution

class Solution(object): def mostCommonWord(self, paragraph, banned): """ :type paragraph: str :type banned: List[str] :rtype: str """ words = re.split("!|\?|'|,|;|\.| ", paragraph) word_map = {}
for word in words: word = word.lower() if not word: continue
if word in banned: continue
if word not in word_map: word_map[word] = 0
word_map[word] += 1
max_word = None max_word_cnt = 0
for word, word_cnt in word_map.items(): if max_word_cnt < word_cnt: max_word = word max_word_cnt = word_cnt
return max_word