# Kotlin program to find the sum of each row and each column of a matrix

Here, we are going to implement a Kotlin program to find the sum of each row and each column of a given matrix.
Submitted by IncludeHelp, on May 08, 2020

Given a matrix, we have to find the sum of each row and each column.

Example:

```    Input:
matrix:
[3, 4, 5]
[6, 3, 3]
[2, 1, 2]
[3, 4, 3]

Output:
[3, 4, 5]  : SumOfRow-> 12
[6, 3, 3]  : SumOfRow-> 12
[2, 1, 2]  : SumOfRow-> 5
[3, 4, 3]  : SumOfRow-> 10
Sum of 1 column : 14
Sum of 2 column : 12
Sum of 3 column : 13
```

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

```package com.includehelp

import java.util.*

// Main function, Entry Point of Program
fun main(args: Array<String>) {

//variable of rows and col
val rows: Int
val column: Int

//Input Stream
val scanner = Scanner(System.`in`)

//Input no of rows and column
print("Enter the number of rows and columns of matrix : ")
rows   = scanner.nextInt()
column = scanner.nextInt()

//Create Array
val matrixA     = Array(rows) { IntArray(column) }

//Input Matrix
println("Enter the Elements of First Matrix (\$rows X \$column} ): ")
for(i in matrixA.indices){
for(j in matrixA[i].indices){
print("matrixA[\$i][\$j]: ")
matrixA[i][j]=scanner.nextInt()
}
}

//print Matrix A and Sum of Row
println("Matrix A : ")
for(i in matrixA.indices){
println("\${matrixA[i].contentToString()}  : SumOfRow-> \${matrixA[i].sum()} ")
}

//Sum of Column
for(i in 0 until column){
var sumOfCol=0
for(j in 0 until rows){
sumOfCol+=matrixA[j][i]
}
println("Sum of \${i+1} column : "+sumOfCol)
}
}
```

Output

```Run 1:
Enter the number of rows and columns of matrix : 3
2
Enter the Elements of First Matrix (3 X 2} ):
matrixA[0][0]: 3
matrixA[0][1]: 4
matrixA[1][0]: 5
matrixA[1][1]: 2
matrixA[2][0]: 1
matrixA[2][1]: 2
Matrix A :
[3, 4]  : SumOfRow-> 7
[5, 2]  : SumOfRow-> 7
[1, 2]  : SumOfRow-> 3
Sum of 1 column : 9
Sum of 2 column : 8
-----------
Run 2:
Enter the number of rows and columns of matrix : 4
3
Enter the Elements of First Matrix (4 X 3} ):
matrixA[0][0]: 3
matrixA[0][1]: 4
matrixA[0][2]: 5
matrixA[1][0]: 6
matrixA[1][1]: 3
matrixA[1][2]: 3
matrixA[2][0]: 2
matrixA[2][1]: 1
matrixA[2][2]: 2
matrixA[3][0]: 3
matrixA[3][1]: 4
matrixA[3][2]: 3
Matrix A :
[3, 4, 5]  : SumOfRow-> 12
[6, 3, 3]  : SumOfRow-> 12
[2, 1, 2]  : SumOfRow-> 5
[3, 4, 3]  : SumOfRow-> 10
Sum of 1 column : 14
Sum of 2 column : 12
Sum of 3 column : 13
```

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