LeetCode 3150: Invalid Tweets II Solution
Master LeetCode problem 3150 (Invalid Tweets II), a easy challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.
3150. Invalid Tweets II
Problem Explanation
Explanation:
To solve this problem, we can iterate through each tweet in the given list and count the number of invalid tweets. An invalid tweet is one that contains the word "invalid" in it. We can use a counter variable to keep track of the number of invalid tweets and return this count at the end.
Algorithm:
- Initialize a counter variable to 0.
- Iterate through each tweet in the list.
- Check if the tweet contains the word "invalid".
- If the tweet contains the word "invalid", increment the counter by 1.
- Return the counter at the end.
Time Complexity:
The time complexity of this approach is O(n), where n is the number of tweets in the list.
Space Complexity:
The space complexity of this approach is O(1) as we are only using a constant amount of extra space.
:
Solution Code
class Solution {
public int countInvalidTweets(List<String> tweets) {
int count = 0;
for (String tweet : tweets) {
if (tweet.contains("invalid")) {
count++;
}
}
return count;
}
}Try It Yourself
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