public class ForExampleThree {
	public ForExampleThree() {
		int n = 4;

		System.out.println("counting up from 0 to n-1");
		for (int i = 0; i < n; i++) {
			System.out.println(i);
		}

		System.out.println("counting up from 1 to n");
		for (int i = 1; i <= n; i++) {
			System.out.println(i);
		}

		System.out.println("counting down from n - 1 to 0");
		for (int i = n - 1; i >= 0; i--) {
			System.out.println(i);
		}

		System.out.println("counting down from n to 1");
		for (int i = n; i > 0; i--) {
			System.out.println(i);
		}

		// increments (or decrements) can be different from one
		System.out.println("Increments of two");
		for (int i = 0; i <= n; i = i + 2) {
			System.out.println(i);
		}

		// initialization part with multiple declarations
		System.out.println("Computing Sum");
		int number = 5, sum = 0;
		for (int k = 1, delta = 20; k <= number; k++) {
			sum = sum + delta;
		}
		System.out.println("Sum: " + sum);
	}
	public static void main(String[] args) {
		new ForExampleThree();
	}
}