Question
A sentence is a string of single-space separated words where each word consists only of lowercase letters.
A word is uncommon if it appears exactly once in one of the sentences, and does not appear in the other sentence.
Given two sentences s1
and s2
, return a list of all the uncommon words. You may return the answer in any order.
Example 1:
Input: s1 = "this apple is sweet", s2 = "this apple is sour" Output: ["sweet","sour"]
Example 2:
Input: s1 = "apple apple", s2 = "banana" Output: ["banana"]
Constraints:
1 <= s1.length, s2.length <= 200
s1
ands2
consist of lowercase English letters and spaces.s1
ands2
do not have leading or trailing spaces.- All the words in
s1
ands2
are separated by a single space.
Python Solution
class Solution: def uncommonFromSentences(self, A: str, B: str) -> List[str]: d={} for i in A.split(): d[i] = d.get(i, 0) + 1 for i in B.split(): d[i] = d.get(i, 0) + 1 l=[] for k,v in d.items(): if v==1: l.append(k) return(l)