Contents

<?php

/**
 * @param string $a
 * @param string $b
 * @return int distance
 */
function distance($a, $b)
{
    if (strlen($a) !== strlen($b)) {
        throw new InvalidArgumentException('DNA strands must be of equal length.');
    }

    return count(
        array_diff_assoc(
            str_split($a),
            str_split($b)
        )
    );
}

Version data entries

396 entries across 396 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/php/exercises/hamming/example.php
trackler-2.2.1.179	tracks/php/exercises/hamming/example.php
trackler-2.2.1.178	tracks/php/exercises/hamming/example.php
trackler-2.2.1.177	tracks/php/exercises/hamming/example.php
trackler-2.2.1.176	tracks/php/exercises/hamming/example.php
trackler-2.2.1.175	tracks/php/exercises/hamming/example.php
trackler-2.2.1.174	tracks/php/exercises/hamming/example.php
trackler-2.2.1.173	tracks/php/exercises/hamming/example.php
trackler-2.2.1.172	tracks/php/exercises/hamming/example.php
trackler-2.2.1.171	tracks/php/exercises/hamming/example.php
trackler-2.2.1.170	tracks/php/exercises/hamming/example.php
trackler-2.2.1.169	tracks/php/exercises/hamming/example.php
trackler-2.2.1.167	tracks/php/exercises/hamming/example.php
trackler-2.2.1.166	tracks/php/exercises/hamming/example.php
trackler-2.2.1.165	tracks/php/exercises/hamming/example.php
trackler-2.2.1.164	tracks/php/exercises/hamming/example.php
trackler-2.2.1.163	tracks/php/exercises/hamming/example.php
trackler-2.2.1.162	tracks/php/exercises/hamming/example.php
trackler-2.2.1.161	tracks/php/exercises/hamming/example.php
trackler-2.2.1.160	tracks/php/exercises/hamming/example.php