884. Uncommon Words from Two Sentences
Explanation
- Split the input sentences
s1ands2into words. - Count the frequency of each word in both sentences.
- Identify the uncommon words based on the conditions given in the problem.
- Return the list of uncommon words.
Time Complexity: O(n) Space Complexity: O(n)
import java.util.*;
class Solution {
public String[] uncommonFromSentences(String s1, String s2) {
Map<String, Integer> count = new HashMap<>();
for (String word : (s1 + " " + s2).split(" ")) {
count.put(word, count.getOrDefault(word, 0) + 1);
}
List<String> uncommon = new ArrayList<>();
for (String word : count.keySet()) {
if (count.get(word) == 1) {
uncommon.add(word);
}
}
return uncommon.toArray(new String[0]);
}
}Code Editor (Testing phase)
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