Question 1
public static void main(String[] args) {
		int[] array = {1,2,3,4,5,6};
		
		 //boolean result = isUnique(array);
		 System.out.print(isUnique(array));
		
	}
	
	public static boolean isUnique(int[] array) {
		int value;
		for(int i=0; i<array.length; i++) 
		{
			value = array[i];
			for(int j=i+1; j<array.length; j++) 
			{
				if(value == array[j]) 
				{
					return false;
					}
				}
		}
		return true;
	}
}
//OUTPUT:
true


public static void main(String[] args) {
		int[] array = {2,2,3,4,5,6};
		
		 //boolean result = isUnique(array);
		 System.out.print(isUnique(array));
		
	}
	
	public static boolean isUnique(int[] array) {
		int value;
		for(int i=0; i<array.length; i++) 
		{
			value = array[i];
			for(int j=i+1; j<array.length; j++) 
			{
				if(value == array[j]) 
				{
					return false;
					}
				}
		}
		return true;
	}
}
//OUTPUT:
false