public class Ruler {
    public static void main(String[] args) {
        String ruler1 = "1";
        String ruler2 = ruler1 + " 2 " + ruler1;
        String ruler3 = ruler2 + " 3 " + ruler2;
        String ruler4 = ruler3 + " 4 " + ruler3;
        String ruler5 = ruler4 + " 5 " + ruler4;

        System.out.println(ruler1);
        System.out.println(ruler2);
        System.out.println(ruler3);
        System.out.println(ruler4);
        System.out.println(ruler5);
    }

}


/*************************************************************************
 *  Execution:    java Ruler
 *
 *  Prints the relative lengths of the subdivisions on a ruler.
 *
 *  % java Ruler
 *  1
 *  1 2 1
 *  1 2 1 3 1 2 1
 *  1 2 1 3 1 2 1 4 1 2 1 3 1 2 1
 *  1 2 1 3 1 2 1 4 1 2 1 3 1 2 1 5 1 2 1 3 1 2 1 4 1 2 1 3 1 2 1
 *
 *************************************************************************/

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Tagged as: Java program - String concatenation example, Java programe - String concatenation example