# Input numbers in 2d array and find the sum of all 2 digit and 3 digit numbers in Java

###### Two Dimensional Array - Question 2

In this question, we will see how to input numbers in a 3X3 integer matrix (2d array) and find the sum of all 2-digit and 3-digit positive numbers separately in Java programming. To know more about two dimensional array click on the two dimensional array lesson.

**Q2)** Write a program in Java to input numbers in a 3X3 integer matrix (2d array) and find the sum of all 2-digit and 3-digit positive numbers separately.

#### Program

```
import java.util.Scanner;
public class Q2
{
public static void main(String args[])
{
int a[][]=new int[3][3], r,c,s1=0,s2=0;
Scanner sc=new Scanner(System.in);
System.out.println("Enter 9 numbers");
for(r=0; r<3; r++)
{
for(c=0; c<3; c++)
{
a[r][c]=sc.nextInt();
if(a[r][c]>=10 && a[r][c]<=99)
{
s1=s1+a[r][c];
}
else if(a[r][c]>=100 && a[r][c]<=999)
{
s2=s2+a[r][c];
}
}
}
System.out.println("Sum of 2 digit positive numbers = "+s1);
System.out.println("Sum of 3 digit positive numbers = "+s2);
}
}
```

#### Output

Enter 9 numbers 12 4 69 124 36 221 96 5 7 Sum of 2 digit positive numbers = 213 Sum of 3 digit positive numbers = 345