package functions.one;
interface ArrFun {
	public int[] exec(int[] x);
}

interface IntFun {
	public int exec(int x);
}

class Abs implements IntFun {
	public int exec(int x) {
		//SAME AS: if (x < 0) return -x; else return x;
		return (x < 0) ? -x : x;
	}
}

class Cube implements IntFun {
	public int exec(int x) {
		return x*x*x;
	}
}

class Map implements ArrFun {
	IntFun f;
	public Map(IntFun f) { this.f = f; }
	public int[] exec(int[] x) {
		int[] answer = new int[x.length];
		for (int i=0; i<x.length; i++) {
			answer[i] = f.exec(x[i]);
		}
		return answer;
	}
}

class Main {
	public static void print(int[] x) {
		System.out.print("[ ");
		for (int i=0; i<x.length; i++)
			System.out.print(x[i]+ " ");
		System.out.println("]");
	}

	public static void main(String[] argv) {
		IntFun f = new Abs();
		System.out.println(f.exec(-5));

		int[] a = new int[10];
		for (int i=0; i<a.length; i++)
			a[i] = -i*10;

		ArrFun mabs = new Map(new Comp(new Abs(), new Cube()));
		print(mabs.exec(a));
	}
}

class Comp implements IntFun {
	IntFun f, g;
	public Comp(IntFun f, IntFun g) { this.f = f; this.g = g; }
	public int exec(int x) {
		return g.exec(f.exec(x));
	}
}