import java.util.Random;

public class Hw06 {
	public static void main(String[] args) {
		Random rnd = new Random();
		float[] a = new float[20];
		float ave;
		int i;
		
		for (i=0; i<20; i++) {
			a[i] = rnd.nextFloat();
			System.out.println(" a[" + i + "] = " + a[i]);
		}
		
		ave = 0;
		for (i=0; i<20; i++) {
			ave += a[i];
		}
		System.out.println(" a[] ‚Ì•½‹Ï‚Í " + ave/20);
	}
}