LeetCode 3295: Report Spam Message Solution

Master LeetCode problem 3295 (Report Spam Message), a medium 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.

3295. Report Spam Message

Medium

Array Hash Table String

Problem Explanation

Explanation

To solve this problem, we can iterate through each word in the message array and check if it matches any word in the bannedWords array. For each word in message, we compare it with each word in bannedWords and count the number of matches. If we find at least two matches, we return true as the message is considered spam. If no word in message has at least two matches, we return false.

Time complexity: O(m * n), where m is the number of words in message and n is the number of words in bannedWords.
Space complexity: O(1).

Solution Code

public boolean isSpamMessage(String[] message, String[] bannedWords) {
    for (String word : message) {
        int count = 0;
        for (String bannedWord : bannedWords) {
            if (word.equals(bannedWord)) {
                count++;
                if (count >= 2) {
                    return true;
                }
            }
        }
    }
    return false;
}

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