Q:

# Kotlin program to find frequencies of even and odd numbers in a matrix

belongs to collection: Kotlin Array Programs

Given a matrix, we have to find frequencies of even and odd numbers.

Example:

```    Input:
matrix:
[4, 5]
[6, 0]
[9, 2]

Output:
Even Elements Frequency : 4
Odd  Elements Frequency : 2```

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### Program to find frequencies of even and odd numbers in 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

var oddCount  = 0
var evenCount = 0

//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()

//count Odd and Even elements Frequency
if(matrixA[i][j]%2==0) evenCount++ else oddCount++
}
}

//print Matrix A
println("Matrix A : ")
for(i in matrixA.indices){
println("\${matrixA[i].contentToString()} ")
}

//Print Frequency
println("Even Elements Frequency : \$evenCount")
println("Odd  Elements Frequency : \$oddCount")
}
``````

Output

```Run 1:
Enter the number of rows and columns of matrix : 2
4
Enter the Elements of First Matrix (2 X 4} ):
matrixA[0][0]: 3
matrixA[0][1]: 4
matrixA[0][2]: 5
matrixA[0][3]: 7
matrixA[1][0]: 0
matrixA[1][1]: 9
matrixA[1][2]: 1
matrixA[1][3]: -4
Matrix A :
[3, 4, 5, 7]
[0, 9, 1, -4]
Even Elements Frequency : 3
Odd  Elements Frequency : 5
-----------
Run 2:
Enter the number of rows and columns of matrix : 3
2
Enter the Elements of First Matrix (3 X 2} ):
matrixA[0][0]: 4
matrixA[0][1]: 5
matrixA[1][0]: 6
matrixA[1][1]: 0
matrixA[2][0]: 9
matrixA[2][1]: 2
Matrix A :
[4, 5]
[6, 0]
[9, 2]
Even Elements Frequency : 4
Odd  Elements Frequency : 2```

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