PowersOfTwo.java

This is the syntax highlighted version of PowersOfTwo.java from 2.3 Conditionals, Loops of
Introduction to Computer Science by Robert Sedgewick and Kevin Wayne.


/*************************************************************************
 *  Compilation:  javac PowersOfTwo.java
 *  Execution:    java PowersOfTwo
 *  
 *  Prints out the first 31 powers of 2: 2^0, 2^1, ..., 2^30
 *  using a while loop.
 *
 *  % java PowersOfTwo
 *  0 1
 *  1 2
 *  2 4
 *  3 8
 *  4 16
 *  5 32
 *  ...
 *  29 536870912
 *  30 1073741824
 *
 *************************************************************************/

public class PowersOfTwo {
    public static void main(String[] args) {
        int i = 0;
        int N = 1;
        while (i <= 30) {
            System.out.println(i + " " + N);
            i = i + 1;
            N = 2 * N;
        }
    }
}