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-2.2.1.159	tracks/php/exercises/hamming/example.php
trackler-2.2.1.158	tracks/php/exercises/hamming/example.php
trackler-2.2.1.157	tracks/php/exercises/hamming/example.php
trackler-2.2.1.156	tracks/php/exercises/hamming/example.php
trackler-2.2.1.155	tracks/php/exercises/hamming/example.php
trackler-2.2.1.154	tracks/php/exercises/hamming/example.php
trackler-2.2.1.153	tracks/php/exercises/hamming/example.php
trackler-2.2.1.152	tracks/php/exercises/hamming/example.php
trackler-2.2.1.151	tracks/php/exercises/hamming/example.php
trackler-2.2.1.150	tracks/php/exercises/hamming/example.php
trackler-2.2.1.149	tracks/php/exercises/hamming/example.php
trackler-2.2.1.148	tracks/php/exercises/hamming/example.php
trackler-2.2.1.147	tracks/php/exercises/hamming/example.php
trackler-2.2.1.146	tracks/php/exercises/hamming/example.php
trackler-2.2.1.145	tracks/php/exercises/hamming/example.php
trackler-2.2.1.144	tracks/php/exercises/hamming/example.php
trackler-2.2.1.143	tracks/php/exercises/hamming/example.php
trackler-2.2.1.142	tracks/php/exercises/hamming/example.php
trackler-2.2.1.141	tracks/php/exercises/hamming/example.php
trackler-2.2.1.140	tracks/php/exercises/hamming/example.php