/*
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 */
package hwk1;

/**
 *
 * @author Joseph Rowan
 */
class Hwk1 {

    public static <T> boolean contains(T[] input, Check<T> c){
        for(int i = 0;i < input.length; i++){
            if(c.ok(input[i]))
                return true;
        }return false;
    }

    static public interface Check<T>{
        boolean ok(T item); //item T is ok (negative e.g.)
    }

    static public class Prime implements Check<Integer>{
        public boolean ok(Integer val){
            for(int i = 2;i < val/2;i++){
                if(val%i == 0) return true;
            }return false;
        }
    }

    static public class PerfectSquare implements Check<Integer>{
        public boolean ok(Integer val){
            int root = (int) Math.sqrt(val);
            return root*root == val;
        }
    }    

    static public class Negative implements Check<Integer>{
        public boolean ok(Integer val){
            return val < 0;
        }
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Integer[] input = {100, 37, 49};
        boolean result1 = contains(input, new Prime());
        boolean result2 = contains(input, new PerfectSquare());
        boolean result3 = contains(input, new Negative());
        System.out.println("Array contains prime number: "+result1);
        System.out.println("Array contains perfect square: "+result2);
        System.out.println("Array contains negative number: "+result3);
    }
}