Program to Find The Sum of Each Row And Each Column of a Matrix

→next ← prev

Program to find the sum of each row and each column of a matrix

Explanation

In this program, we need to calculate the sum of elements in each row and each column of the given matrix.

Program to find the sum of each row and each column of a matrix

Above diagram shows the sum of elements of each row and each column of a matrix.

Algorithm

Declare and initialize a two-dimensional array a.
Calculate the number of rows and columns present in the array a and store it in variables rows and cols respectively.
Maintain two variables sumRow and sumCol to store the sum of elements in the specific row and the sum of elements in specific column respectively.
To calculate the sum of elements in each row:
1. Two loops will be used to traverse the array where the outer loop selects a row, and the inner loop represents the columns present in the matrix a.
2. Calculate the sum by adding elements present in a row.
3. Display sumRow.
4. Repeat this for each row.
To calculate the sum of elements in each column:
1. Two loops will be used to traverse the array where the outer loop select a column, and the inner loop represents the rows present in the matrix a.
2. Calculate the sum by adding elements present in a column.
3. Display sumCol.
4. Repeat this for each column.

Solution

Python

#Initialize matrix a
a = [  
        [1, 2, 3],
        [4, 5, 6],
        [7, 8, 9]
    ];
 
#Calculates number of rows and columns present in given matrix
rows = len(a);
cols = len(a[0]);
 
#Calculates sum of each row of given matrix
for i in range(0, rows):
    sumRow = 0;
    for j in range(0, cols):
        sumRow = sumRow + a[i][j];
    print("Sum of " + str(i+1) +" row: " + str(sumRow));
 
#Calculates sum of each column of given matrix
for i in range(0, rows):
    sumCol = 0;
    for j in range(0, cols):
        sumCol = sumCol + a[j][i];
    print("Sum of " + str(i+1) +" column: " + str(sumCol));

Output:

Sum of 1 row: 6
Sum of 2 row: 15
Sum of 3 row: 24
Sum of 1 column: 12
Sum of 2 column: 15
Sum of 3 column: 18

C

#include <stdio.h>
 
int main()
{
    int rows, cols, sumRow, sumCol;

    
    //Initialize matrix a
    int a[][3] = {   
                    {1, 2, 3},
                    {4, 5, 6},
                    {7, 8, 9}
                };
    
    //Calculates number of rows and columns present in given matrix
    rows = (sizeof(a)/sizeof(a[0]));
    cols = (sizeof(a)/sizeof(a[0][0]))/rows;
    
    //Calculates sum of each row of given matrix
    for(int i = 0; i < rows; i++){
        sumRow = 0;
        for(int j = 0; j < cols; j++){
          sumRow = sumRow + a[i][j];
        }
        printf("Sum of %d row: %d\n", (i+1), sumRow);
    }
    
    //Calculates sum of each column of given matrix
    for(int i = 0; i < cols; i++){
        sumCol = 0;
        for(int j = 0; j < rows; j++){
          sumCol = sumCol + a[j][i];
        }
        printf("Sum of %d column: %d\n", (i+1), sumCol);
    }
        
    return 0;
}

Output:

Sum of 1 row: 6
Sum of 2 row: 15
Sum of 3 row: 24
Sum of 1 column: 12
Sum of 2 column: 15
Sum of 3 column: 18

JAVA

public class SumofRowColumn
{
    public static void main(String[] args) {
        int rows, cols, sumRow, sumCol;
        
        //Initialize matrix a
        int a[][] = {   
                        {1, 2, 3},
                        {4, 5, 6},
                        {7, 8, 9}
                    };
          
          //Calculates number of rows and columns present in given matrix
          rows = a.length;
        cols = a[0].length;
        
        //Calculates sum of each row of given matrix
        for(int i = 0; i < rows; i++){
            sumRow = 0;
            for(int j = 0; j < cols; j++){
              sumRow = sumRow + a[i][j];
            }
            System.out.println("Sum of " + (i+1) +" row: " + sumRow);
        }
        
        //Calculates sum of each column of given matrix
        for(int i = 0; i < cols; i++){
            sumCol = 0;
            for(int j = 0; j < rows; j++){
              sumCol = sumCol + a[j][i];
            }
            System.out.println("Sum of " + (i+1) +" column: " + sumCol);
        }
    }
}

Output:

Sum of 1 row: 6
Sum of 2 row: 15
Sum of 3 row: 24
Sum of 1 column: 12
Sum of 2 column: 15
Sum of 3 column: 18

C#

using System;
                    
public class SumofRowColumn
{
    public static void Main()
    {
        int rows, cols, sumRow, sumCol;
        
        //Initialize matrix a
        int[,] a = {   
                        {1, 2, 3},
                        {4, 5, 6},
                        {7, 8, 9}
                   };
          
          //Calculates number of rows and columns present in given matrix
          rows = a.GetLength(0);
        cols = a.GetLength(1);
        
        //Calculates sum of each row of given matrix
        for(int i = 0; i < rows; i++){
            sumRow = 0;
            for(int j = 0; j < cols; j++){
              sumRow = sumRow + a[i,j];
            }
            Console.WriteLine("Sum of " + (i+1) +" row: " + sumRow);
        }
        
        //Calculates sum of each column of given matrix
        for(int i = 0; i < cols; i++){
            sumCol = 0;
            for(int j = 0; j < rows; j++){
              sumCol = sumCol + a[j,i];
            }
            Console.WriteLine("Sum of " + (i+1) +" column: " + sumCol);
        }
    }
}

Output:

Sum of 1 row: 6
Sum of 2 row: 15
Sum of 3 row: 24
Sum of 1 column: 12
Sum of 2 column: 15
Sum of 3 column: 18

PHP

<!DOCTYPE html>
<html>
<body>
<?php
//Initialize matrix a
$a = array(   
             array(1, 2, 3),
             array(4, 5, 6),
             array(7, 8, 9)
           );
 
//Calculates number of rows and columns present in given matrix
$rows = count($a);
$cols = count($a[0]);
 
//Calculates sum of each row of given matrix
for($i = 0; $i < $rows; $i++){
    $sumRow = 0;
    for($j = 0; $j < $cols; $j++){
      $sumRow = $sumRow + $a[$i][$j];
    }
    print("Sum of " . ($i+1) ." row: " . $sumRow);
    print("<br>");
}
 
//Calculates sum of each column of given matrix
for($i = 0; $i < $cols; $i++){
    $sumCol = 0;
    for($j = 0; $j < $rows; $j++){
      $sumCol = $sumCol + $a[$j][$i];
    }
    print("Sum of " . ($i+1) . " column: " . $sumCol);
    print("<br>");
}
?>
</body>
</html>

Output:

Sum of 1 row: 6
Sum of 2 row: 15
Sum of 3 row: 24
Sum of 1 column: 12
Sum of 2 column: 15
Sum of 3 column: 18

Next Topic#

← prev next →

Help Others, Please Share

Learn Latest Tutorials

Arduino

Digital E.

Adwords

MySQL

Python

Smartsheet

Affiliate M.

Testing

Proc*C

SMM

GDB

Fuzzy Logic

Preparation

Aptitude

Reasoning

Verbal A.

Interview

Company

Trending Technologies

AWS

Selenium

Cloud

Hadoop

ReactJS

D. Science

Angular 7

Blockchain

Git

DevOps

B.Tech / MCA

DBMS

DAA

C. Network

Compiler D.

COA

D. Math.

E. Hacking

C. Graphics

Software E.

Web Tech.

Cyber Sec.

Automata

C++

Java

.Net

Python

Programs

Control S.

Data Mining

Javatpoint Services

JavaTpoint offers too many high quality services. Mail us on hr@javatpoint.com, to get more information about given services.

Website Designing
Website Development
Java Development
PHP Development
WordPress
Graphic Designing
Logo
Digital Marketing
On Page and Off Page SEO
PPC
Content Development
Corporate Training
Classroom and Online Training
Data Entry

Training For College Campus

JavaTpoint offers college campus training on Core Java, Advance Java, .Net, Android, Hadoop, PHP, Web Technology and Python. Please mail your requirement at hr@javatpoint.com.
Duration: 1 week to 2 week

^{Like/Subscribe us for latest updates or newsletter}