Please Help me w/ this Problem...

[osborne]

This is the Output i want to work out using multidimensional array?
This is the output...
the sum to the 1st row and sum of the 2nd column...

1 2 3 = 6
4 5 6 = 15
7 8 9 = 24
121518

Please help me with this one... im new in java...

[masijade]

An array of sums and two nested loops.

Give it a try, and then post the problematic code and give a complete description of your actual problem.

[osborne]

public class Main {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
int[][] matrix = new int[4][3];
int row, col, value = 1;
final int NUM_ROWS = matrix.length;
final int NUM_COLS = matrix[0].length;

for (row = 0; row < NUM_ROWS; row++) {
for (col = 0; col < NUM_COLS; col++) {
matrix[row][col] = value;
value++;
}
}

for (row = 0; row < NUM_ROWS; row++) {
for (col = 0; col < NUM_COLS; col++) {
System.out.print(matrix[row][col] + "\t");
}
System.out.println();
}

}


}



I need help with my code that will find the sum of the 3 rows which equal 6, 15, 24, 33 then add the columns that equal 22, 26 , 30.
here is my code so far:

[masijade]

Well, like I said, create a single dimensional array for the sums (that will correlate, of course, to the second dimension in your 2 dimensional array). Then, using nested loops, sum the values from the second dimension columns using the same index into the sum array.

At least try it.

[Sven]

public class Main {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
    int[][] matrix = new int[4][3];
    int row, col, value = 1;
    final int NUM_ROWS = matrix.length;
    final int NUM_COLS = matrix[0].length;

    for (row = 0; row < NUM_ROWS; row++) {
        for (col = 0; col < NUM_COLS; col++) {
            matrix[row][col] = value;
            value++;
        }
    }

    for (row = 0; row < NUM_ROWS; row++) {
             for (col = 0; col < NUM_COLS; col++) {
                  System.out.print(matrix[row][col] + "\t");
             }
             System.out.println();
         }
    }
}

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