Below is the syntax highlighted version of Loops.java
from §1.3 Conditionals and Loops.
/****************************************************************************** * Compilation: javac Loops.java * Execution: java Loops * * Various loops. ******************************************************************************/ public class Loops { public static void main(String[] args) { int n = Integer.parseInt(args[0]); // print powers of two int power = 1; for (int i = 0; i <= n; i++) { System.out.println(power); power = 2 * power; } System.out.println(); // print largest power of two less than or equal to n power = 1; while (power <= n/2) { power = 2 * power; } System.out.println("largest power of two <= " + n + " = " + power); System.out.println(); // compute a finite sum (1 + 2 + ... + n) int sum = 0; for (int i = 1; i <= n; i++) { sum += i; } System.out.println("sum of first " + n + " positive integers = " + sum); System.out.println(); // compute a finite product (n!) int product = 1; for (int i = 1; i <= n; i++) { product *= i; } System.out.println(n + "! = " + product); System.out.println(); // print a table of values (2 pi i / n) for (int i = 0; i <= n; i++) { System.out.println(i + " " + 2 * Math.PI * i / n); } System.out.println(); // print the ruler function String ruler = " "; for (int i = 1; i <= n; i++) { ruler = ruler + i + ruler; } System.out.println(ruler); System.out.println(); } }