Question

Write a function declaration for a function that sums each row of a 2D array, where each row size is 10. The function does not return a result. Need it in 10 minutes, please.

Answer 1

Program:

import java.util.*;

class RowsSumDemo
{
public static void sumOfEachRow(int M[][])
{

//calculating the sum of each row
int sum=0;
int sumRow[]=new int[10];

for(int r=0;r<=9;r++)
{
sum=0;
for(int c=0;c<=9;c++)
{
sum=sum+M[r][c];
}
sumRow[r]=sum;
}

//Displaying each row with its sum
System.out.println("\n\nElements of the Array & sum of each row: \n");
for(int r=0;r<=9;r++)
{
for(int c=0;c<=9;c++)
{
System.out.print(M[r][c]+" ");
}
System.out.println(" = "+sumRow[r]);
}
}
public static void main(String args[])
{
Scanner sc=new Scanner(System.in);
int N;

//Assume there are 10 rows and 10 columns
int M[][]=new int[10][10];

//Accepting values from user
System.out.println("\nEnter elements: \n");
for(int r=0;r<=9;r++)
{
for(int c=0;c<=9;c++)
{
M[r][c]=sc.nextInt();
}
}

//calling the function
sumOfEachRow(M);
System.out.println("\n");
}
}

Output: