/*
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/**
 *
 * @author krlsmnk
 */
public class k_smink_hw1 {
    
    static public interface Check<anytype> {

        boolean ok(anytype item); //item anytype is ok (negative e.g.)
    }

    public static void main(String[] args) {


        Integer[] genericArray = {4, 0, 1, 2930, 7, -100};

        boolean hasPrime = contains(genericArray, new Prime());
        boolean hasNegative = contains(genericArray, new Negative());
        boolean hasPerfectSquare = contains(genericArray, new PerfectSquare());
        
        System.out.println("Array contains a Prime number: " + hasPrime);
        System.out.println("Array contains a Perfect Square: " + hasPerfectSquare);
        System.out.println("Array contains a Negative number: " + hasNegative);

    }

    public static class Prime implements Check<Integer> {

        public Prime() {
        }

        @Override
        public boolean ok(Integer item) {
            int c = 2;
            int result = 0;

            while (c <= item / 2) {
                if (item % c == 0) {
                    result = 1;
                }
                c++;
            }
            if (result == 1) {
                return false;
            }
            return true;
        }
    }

    public static class Negative implements Check<Integer> {

        public Negative() {
        }

        @Override
        public boolean ok(Integer item) {
            if (item < 0) {
                return true;
            }
            return false;
        }
    }

    public static class PerfectSquare implements Check<Integer> {

        public PerfectSquare() {
        }

        @Override
        public boolean ok(Integer number) {
            int c = 2;
            int result = 0;
            boolean conanytypeest = false;

            while (c <= number) {
                if (number % c == 0) {
                    conanytypeest = (c * c == number);
                }
                if (conanytypeest == true) {
                    return true;
                }
                c++;
            }

            return false;
        }//end of boolean
    }//end of perfect square

    public static <anytype> boolean contains(anytype[] array, Check<anytype> c) {


        for (int i = 0; i < (array.length); i++) {
            boolean ok = c.ok(array[i]);
            //if entry is found, array contains one or more of those
            if (ok == true) {
                return true;
            }
        }
        //default case
        return false;
    }//end of contains
    
}