Week 4 Classwork Solutions

WeekFourCW.java

/**
 * This class contains the solutions to
 * the Week 4 classwork exercises.
 */
public class WeekFourCW {

    public static void main(String[] args) {

        /* Problem 1: Create An Array

        - Create your own array!
        - It should consist of your 4 favorite foods
        - Use what we learned about defining and declaring an array
        - Think about what data type you should use for this task
         */

        String[] favFoods = {"Biryani", "Ice Cream", "Chocolate", "Raspberries"};

        /* Problem 2: Calculate Sum (No Loops)
        Using what we learned about indexing, your challenge is
        to calculate and print the sum of all values in the array
        below.

        Remember that you must get each element using the index
        to find the sum. Do not directly use the values, like
        int sum = 11 + 4 + 25 + 15 + ...;
         */

        int[] array1 = {11, 4, 25, 15, 10, 33, 4, 6, 17};

        int sum1 = array1[0] + array1[1] + array1[2] + array1[4] +
                  array1[5] + array1[6] + array1[7] + array1[8];

        System.out.println("\nClasswork Problem 2\n"); // to separate problems
        System.out.println("\tSum = " + sum1);

        /* Problem 3: Calculate Sum (Using Loops)

        Your challenge is to make code that prints the sum of all integers in
        the array.
         */

        System.out.println("\nClasswork Problem 3\n"); // to separate problems

        int sum2 = 0;
        int[] array2 = {0, 1, 2, 3, 4, 5, 6, 7, 8};

        for (int i = 0; i < array2.length; i++) {
            sum2 = sum2 + array2[i];
        }

        System.out.println("\tSum = " + sum2);

    }

}