/TypeScript/Adding elements in a specified column or row in a two dimensional array java

Adding elements in a specified column or row in a two dimensional array java

package multidimensionalarrays;

public class MultidimensionalArrays {

    public static void main(String[] args) {
        double sumOfRow = 0;
        double[][] matrix = new double[3][4];
        java.util.Scanner input = new java.util.Scanner(System.in); //Scanner
        System.out.println("Enter a 3 by 4 matrix row by row: ");
        //Prompt user to enter matrix numbers
        for (int row = 0; row < matrix.length; row++) {
            for (int col = 0; col < matrix[0].length; col++) {
                matrix[row][col] = input.nextDouble();
            }
        }
        double[] sumOfCol =new double[matrix[0].length];  
        for (int i = 0; i < matrix.length; i++) { //row
            for (int j = 0; j < matrix[i].length; j++) { //column
                sumOfRow += matrix[i][j];
                sumOfCol[j] += matrix[i][j];
            }
            System.out.println("Sum of the elements at row " + row + " is: " + sumOfRow);
        }
        System.out.println("Sum of the elements at column " + col + " is: " + sumOfCol);
    }             
}

Source: stackoverflow.com

Adding elements in a specified column or row in a two dimensional array java

/* After the prompt code segment and sumOfCol in the main method */

    // Row (major index)
    for (int row = 0; row < matrix.length; row++) {
        int rowSum = 0;
        for (int col = 0; col < matrix[row].length; col++) {
            rowSum += matrix[row][col];
        }
        System.out.println("Sum of the elements at row " + row + " is: " + rowSum);
    }

    // Column (minor index)
    // Assuming the length of each row is the same
    for (int col = 0; col < matrix[0].length; col++) {
        int colSum = 0;
        for (int row = 0; row < matrix.length; row++) {
            colSum += matrix[row][col];
        }
        System.out.println("Sum of the elements at col " + col + " is: " + colSum);
    }

Source: stackoverflow.com

Similar codes

0 vote360 views1 answer
How to make the score add on while its in a loop in python
TypeScript
5 votes328 views1 answer
FIRST principle in testing
TypeScript
3 votes323 views1 answer
Adonis validator opcional
TypeScript
0 vote352 views1 answer
Number_format() expects parameter 1 to be float, string given
TypeScript
0 vote356 views1 answer
Passing arguments in python from command line as key value
TypeScript
0 vote328 views1 answer
Update multiple documents with different field value by id set. Mongoose
TypeScript
0 vote322 views1 answer
Typescript final example
TypeScript
0 vote317 views1 answer
Usage: testing_caption_generator.py [-h] -i IMAGE testing_caption_generator.py: error: the following arguments are required: -i/--image An exception has occurred, use %tb to see the full traceback.
TypeScript
0 vote329 views1 answer
How to clear all products woocommerce keep category
TypeScript
1 vote335 views1 answer
Using log how can we find number of digits for a number in java
TypeScript