Given a matrix of order m*n then the task is to find the frequency of even and odd numbers in matrix
Examples:
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
PHP
<?php// PHP Program to Find the frequency// of even and odd numbers in a matrix$MAX = 100;// function for calculating frequencyfunction freq($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,""; 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
Time Complexity: O(m*n)
Auxiliary Space: O(1)
Please refer complete article on Frequencies of even and odd numbers in a matrix for more details!
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