# [Solved] A sentence is a string of single-space separated words where each word consists only of lowercase letters.

## Question

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` 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.

## 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)```