bug

[DreadDoctor-Org]

import java.util.HashSet;
import java.util.Arrays;

public class DuplicateChecker {

public static boolean hasDuplicates(int[] arr) {
    // Use a HashSet to efficiently detect duplicates.  HashSets don't allow duplicates.
    HashSet<Integer> seen = new HashSet<>();

    for (int num : arr) {
        if (seen.contains(num)) {
            return true; // Found a duplicate!
        }
        seen.add(num); // Add the current number to the set.
    }

    return false; // No duplicates found after checking all elements.
}


public static void main(String[] args) {
    int[] arr1 = {1, 2, 3, 4, 5};
    int[] arr2 = {1, 2, 3, 2, 5};
    int[] arr3 = {1,1,1,1,1};
    int[] arr4 = {}; //Empty array

    System.out.println("Array 1 has duplicates: " + hasDuplicates(arr1)); // Output: false
    System.out.println("Array 2 has duplicates: " + hasDuplicates(arr2)); // Output: true
    System.out.println("Array 3 has duplicates: " + hasDuplicates(arr3)); // Output: true
    System.out.println("Array 4 has duplicates: " + hasDuplicates(arr4)); // Output: false (an empty array has no duplicates)


    //Demonstrating with other data types (example with Strings):
    String[] strArr1 = {"apple", "banana", "cherry"};
    String[] strArr2 = {"apple", "banana", "apple"};

    System.out.println("String Array 1 has duplicates: " + hasDuplicates(strArr1)); // Output: false
    System.out.println("String Array 2 has duplicates: " + hasDuplicates(strArr2)); // Output: true


}


//Overloading the hasDuplicates method to work with other data types (e.g., String)
public static boolean hasDuplicates(String[] arr) {
    HashSet<String> seen = new HashSet<>();

    for (String str : arr) {
        if (seen.contains(str)) {
            return true;
        }
        seen.add(str);
    }
    return false;
}

}

[DreadDoctor-Org]

cool