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

给定一个矩阵，我们必须找到偶数和奇数的频率。

Example:

例：

    Input:
matrix:
[4, 5]
[6, 0]
[9, 2]
Output:
Even Elements Frequency : 4
Odd  Elements Frequency : 2

在Kotlin中寻找矩阵中偶数和奇数频率的程序 (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

输出量

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

翻译自: https://www.includehelp.com/kotlin/find-frequencies-of-even-and-odd-numbers-in-a-matrix.aspx

kotlin 查找id