// Some examples of for loops.

public class DemonstrateLoops {
    public static void main(String[] args) {
        for (int i = 1; i <= 5; i++) {
            System.out.println("Shave and a haircut,");
            System.out.println("two bits");
        }

        System.out.println();  // only 1 blank line printed

        for (int day = 1; day <= 12; day++) {
            System.out.println("On day #" + day + " of Christmas, my true love sent to me");
        }
        
        System.out.println();
        
        // using a table to map from count to desired output number:
        //
        // count      output      count * -4     count * -4 + 21
        // 1          17          -4             17
        // 2          13          -8             13
        // 3          9           -12            9
        // 4          5           -16            5
        // 5          1           -20            1
        //
        for (int count = 1; count <= 5; count++) {
            System.out.print(count * -4 + 21 + " ");
        }
        System.out.println();  // end the line of output

        System.out.println();

        // nested loops to print a multiplication table
        for (int i = 1; i <= 5; i++) {
            for (int j = 1; j <= 10; j++) {
                System.out.print((i * j) + " ");
            }
            System.out.println();  // end the line
        }
        
        // What happens if we move the println command outside
        // the outer loop?  What if we move it into the inner j loop?
    }
}