# 矩陣中偶數和奇數的頻率 > 原文： [https://www.geeksforgeeks.org/find-frequency-even-odd-numbers-matrix/](https://www.geeksforgeeks.org/find-frequency-even-odd-numbers-matrix/) 給定一個階數為 m * n 的矩陣，則任務是在矩陣 中查找偶數和奇數的頻率。示例： ``` Input : m = 3, n = 3 { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 } Output : Frequency of odd number = 5 Frequency of even number = 4 Input : m = 3, n = 3 { 10, 11, 12 }, { 13, 14, 15 }, { 16, 17, 18 } Output : Frequency of odd number = 4 Frequency of even number = 5 ``` ## CPP ``` // C++ Program to Find the frequency // of even and odd numbers in a matrix #include<bits/stdc++.h> using namespace std; #define MAX 100 // function for calculating frequency void freq(int ar[][MAX], int m, int n) { ????int even = 0, odd = 0; ????for (int i = 0; i < m; ++i) ????{ ????????for (int j = 0; j < n; ++j) ????????{ ????????????// modulo by 2 to check ????????????// even and odd ????????????if ((ar[i][j] % 2) == 0) ????????????????++even; ????????????else ????????????????++odd; ????????} ????} ????// print Frequency of numbers ????printf(" Frequency of odd number = %d \n", odd); ????printf(" Frequency of even number = %d \n", even); } // Driver code int main() { ????int m = 3, n = 3;???? ????int array[][MAX] = { { 1, 2, 3 }, ????????????????????????{ 4, 5, 6 }, ????????????????????????{ 7, 8, 9 } }; ????freq(array, m, n); ????return 0; }???????? ``` ## Java ```java // Java Program to Find the frequency // of even and odd numbers in a matrix class GFG { static final int MAX = 100; // function for calculating frequency static void freq(int ar[][], int m, int n) { ????int even = 0, odd = 0; ????for (int i = 0; i < m; ++i)? ????{ ????????for (int j = 0; j < n; ++j) ????????{ ????????????// modulo by 2 to check ????????????// even and odd ????????????if ((ar[i][j] % 2) == 0) ????????????????++even; ????????????else ????????????????++odd; ????} ????} ????// print Frequency of numbers ????System.out.print(" Frequency of odd number =" + ???????????????????????odd + " \n"); ????System.out.print(" Frequency of even number = " + ???????????????????????even + " \n"); } // Driver code public static void main(String[] args) { ????int m = 3, n = 3; ????int array[][] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}; ????freq(array, m, n); } } // This code is contributed by Anant Agarwal. ``` ## Python3 ```py # Python Program to Find the frequency # of even and odd numbers in a matrix MAX=100 # Function for calculating frequency def freq(ar, m, n): ????even = 0 ????odd = 0 ????for i in range(m): ????????for j in range(n): ????????????# modulo by 2 to check ????????????# even and odd ????????????if ((ar[i][j] % 2) == 0): ????????????????even += 1 ????????????else: ????????????????odd += 1 ????# print Frequency of numbers ????print(" Frequency of odd number =", odd) ????print(" Frequency of even number =", even) # Driver code m = 3 n = 3???? array = [ [ 1, 2, 3 ], ????????[ 4, 5, 6 ], ????????[ 7, 8, 9 ] ] freq(array, m, n) # This code is contributed # by Anant Agarwal. ``` ## C# ```cs // C# Program to Find the frequency // of even and odd numbers in a matrix using System; class GFG? { ????//static int MAX = 100; ????// function for calculating frequency ????static void freq(int [,]ar, int m, int n)? ????{ ????????int even = 0, odd = 0; ????????for (int i = 0; i < m; ++i)? ????????{ ????????????for (int j = 0; j < n; ++j) ????????????{ ????????????????// modulo by 2 to check ????????????????// even and odd ????????????????if ((ar[i, j] % 2) == 0) ????????????????????++even; ????????????????else ????????????????????++odd; ????????} ????????} ????????// print Frequency of numbers ????????Console.WriteLine(" Frequency of odd number =" + ????????????????????????odd ); ????????Console.WriteLine(" Frequency of even number = " + ????????????????????????even ); ????} ????// Driver code ????public static void Main()? ????{ ????????int m = 3, n = 3; ????????int [,]array = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}; ????????freq(array, m, n); ????} } // This code is contributed by vt_m. ``` ## PHP ```php <?php // PHP Program to Find the frequency // of even and odd numbers in a matrix $MAX = 100; // function for calculating frequency function freq($ar, $m, $n) { ????$even = 0; $odd = 0; ????for($i = 0; $i < $m; ++$i) ????{ ????????for ( $j = 0; $j < $n; ++$j) ????????{ ????????????// modulo by 2 to check ????????????// even and odd ????????????if (($ar[$i][$j] % 2) == 0) ????????????????++$even; ????????????else ????????????????++$odd; ????????} ????} ????// print Frequency of numbers ????echo " Frequency of odd number = " ???????????????????????????, $odd,"\n"; ????echo " Frequency of even number = " ???????????????????????????????, $even; } ????// Driver code ????$m = 3; $n = 3;? ????$array = array(array(1, 2, 3), ???????????????????array(4, 5, 6), ???????????????????array(7, 8, 9)); ????freq($array, $m, $n); // This code is contributed by anuj_67\. ?> ``` Output: ``` Frequency of odd number = 5 Frequency of even number = 4 ``` * * * * * *