PHP Exercises: Create a new array of given length using the odd numbers from a given array of positive integers

Last update on May 28 2025 13:06:58 (UTC/GMT +8 hours)

136. New Array from Odd Numbers with Given Length

Write a PHP program to create a new array of given length using the odd numbers from a given array of positive integers.

Sample Solution:

PHP Code :

<?php
// Define a function named 'test' that takes an array of numbers 'nums' and an integer 'count'
function test($nums, $count)
{ 
    // Initialize an array 'evens' to store odd numbers, with size 'count'
    $evens = [$count];
    
    // Initialize a variable 'j' to track the index in the 'evens' array
    $j = 0;

    // Use a for loop to iterate through the elements of 'nums'
    for ($i = 0; $j < $count; $i++)
    {
        // Check if the current number is odd
        if ($nums[$i] % 2 != 0)
        {
            // If true, store the odd number in the 'evens' array and increment 'j'
            $evens[$j] = $nums[$i];
            $j++;
        }
    }

    // Return the resulting 'evens' array
    return $evens;
}

// Call the 'test' function with an example input and display the result
$result = test([1,2,3,5,7,9,10], 3);
echo "New array: " . implode(",", $result);
?>

Sample Output:

New array: 1,3,5

Flowchart:

For more Practice: Solve these Related Problems:

Write a PHP script to extract odd numbers from an input array and return a new array of a specified length.
Write a PHP function to filter an array for odd integers and then take the first n odd numbers to form a new array.
Write a PHP program to iterate through an array, select odd values, and stop when the new array reaches the required size.
Write a PHP script to use array_filter() to gather odd numbers and then use array_slice() to return an array of given length.

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