PHP Exercises: Count the number of two 5's are next to each other in an array of integers

PHP Basic Algorithm: Exercise-37 with Solution

Write a PHP program to count the number of two 5's are next to each other in an array of integers. Also count the situation where the second 5 is actually a 6.

Sample Solution:

PHP Code :

<?php
// Define a function that counts the occurrences of specific patterns in an array
function test($numbers)
{
    // Initialize a counter variable
    $ctr = 0;

    // Iterate through the array up to the second-to-last element
    for ($i = 0; $i < sizeof($numbers) - 1; $i++)
    {
        // Check if the current and next elements form a specific pattern
        if (($numbers[$i] == 5) && ($numbers[$i + 1] == 5) || ($numbers[$i + 1] == 6))
        {
            // Increment the counter if the pattern is found
            $ctr++;
        }
    }

    // Return the final count
    return $ctr;
}

// Test the function with different arrays
echo test([5, 5, 2])."\n";
echo test([5, 5, 2, 5, 5])."\n";
echo test([5, 6, 2, 9])."\n";
?>

Sample Output:

1
2
1

Visual Presentation:

Flowchart:

PHP Code Editor:

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