HelloProgram.java

import acm.graphics.*;
import acm.program.*;
public class HelloProgram extends ConsoleProgram {
	private static final int MAX_NUM = 10;
	public void run() {
		for (int i = 0; i < MAX_NUM; i++) {
			println(i + "!= " + factorial(i) );
		}
	}
	private int factorial(int n) {
		int result = 1;
		for (int i = 1; i <= n; i++) {
			result *= i;
		}
		return result;
	}
	
}