Uncommon Words from Two Sentences
A sentence is a string of single-space separated words where each word consists only of lowercase letters.
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"]
Explanation: The word "sweet" appears only in s1 , while the word "sour" appears only in s2 .
Example 2
Input: s1 = "apple apple", s2 = "banana"
Output: ["banana"]
Constraints
- 1 <= s1.length, s2.length <= 200
- s1 and s2 consist of lowercase English letters and spaces.
- s1 and s2 do not have leading or trailing spaces.
- All the words in s1 and s2 are separated by a single space.
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