/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 vote155 views1 answer
Java delete contents of file
TypeScript
0 vote210 views1 answer
Express typescript error handling
TypeScript
3 votes148 views1 answer
Adonis validator optional
TypeScript
0 vote210 views1 answer
Angular build Failed to load resource
TypeScript
0 vote191 views1 answer
Typescript iterate over interface
TypeScript
1 vote158 views1 answer
How to print the results of a command in a fil in linux
TypeScript
0 vote271 views1 answer
Gettime is not a function typescript
TypeScript
3 votes142 views3 answers
Remove duplicate objects based on id from array angular 8
TypeScript
2 votes171 views5 answers
Plot multiple plots in r
TypeScript
0 vote153 views2 answers
Does word start with vowel typescript
TypeScript