1108-defanging-an-ip-address.php

<?php

// 1108. Defanging an IP Address
// https://leetcode.com/problems/defanging-an-ip-address/

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

// Runtime: 4 ms, faster than 81.58% of PHP online submissions
// for Defanging an IP Address.
// Memory Usage: 14.6 MB, less than 100.00% of PHP online submissions
// for Defanging an IP Address.

// class Solution
// {

//     /**
//      * @param String $address
//      * @return String
//      */
//     function defangIPaddr($address)
//     {
//         return str_replace('.', '[.]', $address);
//     }
// }

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

// Runtime: 4 ms, faster than 81.58% of PHP online submissions
// for Defanging an IP Address.
// Memory Usage: 14.8 MB, less than 100.00% of PHP online submissions
// for Defanging an IP Address.

class Solution
{

    /**
     * @param String $address
     * @return String
     */
    function defangIPaddr($address)
    {
        return implode('[.]', explode('.', $address));
    }
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

$tests = [
    [
        'input' => '1.1.1.1',
        'expected' => '1[.]1[.]1[.]1',
    ],
    [
        'input' => '255.100.50.0',
        'expected' => '255[.]100[.]50[.]0',
    ],
];

$s = new Solution();

foreach ($tests as $test) {
    extract($test);
    $output = $s->defangIPaddr($input);
    if ($expected === $output) {
        echo "✅ {$input}<br>";
    } else {
        echo "🔴 {$input}<br>";
        echo "Expected <b>{$expected}</b>, but got <b>${output}</b><br>";
    }
    echo '<hr>';
}