/* 
 * this program affords opportunities to explore the construction of arithmetic expressions 
 * in the context of some very simple problem solving 
 * such as how to use parentheses properly. 
 */
package expressions;

import static java.lang.Math.sqrt;

public class ExpressonsThing {
    public static void main(String[] arg) {
        double one = 3.14 * 5 + 5;
        System.out.println("One = " + one);
        double two = 3.14 * (5 + 5);
        System.out.println("Two = " + two);
        double three = ((3.14) * (5 + 5));
        System.out.println("three = " + three);

        /* The first statement of each pair is supposed to introduce a variable and bind it to a value expressed 
         * as a straightforward translation of an English phrase representing a numeric computation. 
         *The second statement of the pair is merely supposed to display the value of the expression, reasonably labelled. 
         */
        int four = (2 * 3); //* The 1st statement of the pair
        System.out.println("four = " + four); //* The 2nd statement of the pair

        double five = (55.0 / 2.0);
        System.out.println("five = " + five);

        double six = (65.0 / 3.0);
        System.out.println("Six = " + six);

        double seven = ((55.0 / 2.0) + (65.0 / 3.0));
        System.out.println("Seven = " + seven);

        double eight = (3.14 * (11.3 * 11.3));
        System.out.println("eight = " + eight);

        double nine = (27.7 * 27.7);
        System.out.println("nine = " + nine);

        double ten = ((eight + nine) / 2.0);
        System.out.println("ten = " + ten);

        double eleven = (0.17 * 243.5);
        System.out.println("eleven = " + eleven);
        /* ?: How do I use the direct command line to figure out the percentage of double eleven? */

        /*The first statemnet of each pair is supposed to introduce a variable and bind it to a solution to a Crypto problem. 
         * The second statement is merely supposed to display the value of the expression, resonably labelled. 
         */

        //* Crypto #1: use the numbers 3 as the sources to evaluate to the number 1 as goal.
        int twelve = (3/3);
        System.out.println("twelve = " + twelve);

        //*use the numbers 4, 7, 2 as the sources to evaluate to the number 1 as goal.

        int thirteen = (7-(4+2));
        System.out.println("thirteen = " + thirteen);

        //*use the numbers 1, 3 ,7, 9 as sources to evaluate to the number 4 as goal.
        int fourteen = ((9-1)-(7-3));
        System.out.println("fourteen = " +fourteen);

        //*Use 2, 2, 4, 6, 8 as the sources to evaluate to the number 5 as goal.
        int fifteen = (int) (sqrt((8+2)*(6+4))/2);
        System.out.println("fifteen = " + fifteen);


    }
}