/Java/Tim 2 phan tu giong nhau trong 1 mang java

Tim 2 phan tu giong nhau trong 1 mang java

public static boolean checkDuplicateUsingAdd(String[] input) {
    Set tempSet = new HashSet();
    for (String str : input) {
        if (!tempSet.add(str)) {
            return true;
        }
    }
return false;
}

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