🌵884. Uncommon Words from Two Sentences
https://leetcode.com/problems/uncommon-words-from-two-sentences/
js
/**
* @param {string} A
* @param {string} B
* @return {string[]}
*/
var uncommonFromSentences = function(A, B) {
const counter = {}
A.split(' ').forEach(w => {
counter[w] = (counter[w] || 0) + 1
})
B.split(' ').forEach(w => {
counter[w] = (counter[w] || 0) + 1
})
return Object.entries(counter).reduce((ret, [w, c]) => {
if (c === 1) {
ret.push(w)
}
return ret
}, [])
}py
class Solution:
def uncommonFromSentences(self, A, B):
"""
:type A: str
:type B: str
:rtype: List[str]
"""
counter = {}
for w in A.split() + B.split():
counter[w] = counter.get(w, 0) + 1
return [w for w in counter if counter[w] == 1]