Question

(In Java)

1. Create a 6X6 2D Array called numCourses

2. Sum the rows and print out the results with text identifying

what you are outputting.

3. Sum the columns and print out the results with text identifying

what you are outputting.

4. Compare the rows output and calculate and output the minimum

value and maximum value.

*/

public class TwoDArrayExamplesHW{

public static void main(String[] args){

int[][] numCourses = {{2, 3, 2, 0, 0},

   {2, 3, 2, 3, 1},

   {0, 2, 0, 2, 0},

   {1, 1, 1, 1, 1}};

for(int col = 0; col < numCourses[0].length; col++){

int sum = 0;

for(int row = 0; row < numCourses.length; row++){

  

sum += numCourses[row][col];

}

System.out.println("Total is " + sum);

}

}

}

Answer 1

public class Main {

    // main function
    public static void main(String[] args) {
        int[][] numCourses = {{2, 3, 2, 0, 0, 4}, {2, 3, 2, 3, 1, 0}, {0, 2, 0, 2, 0, 2}, {1, 1, 1, 1, 1, 1}, {3, 0, 2, 1, 4, 2}, {5, 4, 1, 3, 4, 2}};

        // display sum of rows
        for(int row = 0; row < numCourses[0].length; row++){
            int sum = 0;
            for(int col = 0; col < numCourses.length; col++){
                sum += numCourses[row][col];
            }
            System.out.println("Sum of row " + (row + 1) + " is: " + sum);
        }
        System.out.println();

        // display sum of columns
        for(int col = 0; col < numCourses[0].length; col++){
            int sum = 0;
            for(int row = 0; row < numCourses.length; row++){
                sum += numCourses[row][col];
            }
            System.out.println("Sum of column " + (col + 1) + " is: " + sum);
        }
        System.out.println();
        
        // display total sum
        int total = 0;
        for(int col = 0; col < numCourses[0].length; col++){
            for(int row = 0; row < numCourses.length; row++){
                total += numCourses[row][col];
            }
        }
        System.out.println("Total is sum of array is: " + total);
        System.out.println();

        // find minimum and maximum of array
        int min = numCourses[0][0];
        int max = numCourses[0][0];
        for(int row = 0; row < numCourses[0].length; row++){
            for(int col = 0; col < numCourses.length; col++){
                if(min > numCourses[row][col]) {
                    min = numCourses[row][col];
                }
                if(max < numCourses[row][col]) {
                    max = numCourses[row][col];
                }
            }
        }
        System.out.println();
        System.out.println("The minimum value in array is: " + min);
        System.out.println("The maximum value in array is: " + max);
    }
}

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