/*
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/**
 *
 * @author Sam Huggins
 */
public class hwk1 {
     public static void main(String[] args) 
    {
        //Array to be tested
        int input[] = {100,37,49};
        //The various calls to the contains method with the different test
        //to be done one each element 
        boolean result1 = contains (input, new Prime());
        boolean result2 = contains (input, new Negative());
        boolean result3 = contains (input, new PerfectSquare());
    }
     //Method used for instantiating the different classes needed for testing
     //the array
    private static <T> boolean contains(int[] input, Check<Integer> c)
    {
        int i = 0;
        //Loop for testing each array element
        while(i < input.length)
        {        
            boolean answer = c.ok(input[i]);
            System.out.println(answer + "\n");
            i++;
        }
            return false;          
    }
    public static interface Check<T>
    {
        boolean ok( T item);
    }
   public static class Prime implements Check<Integer>
   {        
        @Override
        public boolean ok(Integer val)
        {
            System.out.println("Is " + val + " prime?");
            //Test if val is a prime number, if it's divisible by 2 then 
            //it's not or if it's divisible by any odd number less then itself, 
            //then it's also not prime
            if (val%2 == 0) return false;
                for(int i = 3; i*i <= val; i+=2) 
                {
                    if(val%i == 0)
                    return false;
                }
                    return true;
        }
   }
   
   public static class Negative implements Check<Integer>
   {
        @Override
        public boolean ok(Integer item) 
        {    
            System.out.println("Is " + item + " negative?");
            //If item is less then zero its negative
            return item < 0;
        }
   }
   public static class PerfectSquare implements Check<Integer>
   {
        @Override
        public boolean ok(Integer val)
        {
            System.out.println("Is " + val + " a perfect square?");
            //Convert val into a double and test it using the math function
            Double number = (double) val;
            double sqr = Math.sqrt(number);
            return (sqr-Math.floor(sqr)== 0);
        }
   }
}