static class TestDataEmptyArray {
        public static int[] get_array(){
            return new int[] {};
        }
    }
    
    static class TestDataUniqueValues {
        public static int[] get_array(){
            return new int[] {4, 2, 3};
        }
        
        public static int get_expected_result(){
            return 1;
        }
    }
    
    static class TestDataExactlyTwoDifferentMinimums{
        public static int[] get_array(){
            return new int[] {5, 3, 4, 3};
        }
        
        public static int get_expected_result(){
            return 1;
        }
    }