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Link: http://codepad.org/jgT1weAi    [ raw code | output | fork ]

PHP, pasted on May 1:
<?php
function italico(&$array) {
    $cant = count($array);    
 
    if ($cant==0)  return null;        
    $salida = null;
 
    if ($cant>1)
    {
    	for ($i=0;$i<$cant-2;$i++)
        	$salida .= $array[$i].' ,';
 
		return $salida.$array[$cant-2].' y '.$array[$cant-1];  
 
	}else
    	return $array[0];
}
 
function alexis($array) {
	$string = implode(", ", $array);
	return substr_replace ($string, " y ", strrpos($string, ","), 2);
}
 
$array = array("uno", "dos", "tres", "cuatro", "cinco", "seis", "siete", "ocho", "nueve", "diez", "once", "doce", "trece", "catorce", "quince", "dieciseis", "diecisiete", "dieciocho", "diecinueve", "veinte"); 
 
$ini1 = microtime(true) * 1000;
for ($i = 0; $i < 1000; $i++)
    italico($array);
$fin1 = microtime(true) * 1000;
$tiempoItalico = $fin1 - $ini1;
 
$ini2 = microtime(true) * 1000;
for ($i = 0; $i < 1000; $i++)
    alexis($array);
$fin2 = microtime(true) * 1000;
$tiempoAlexis = $fin2 - $ini2;
 
echo "Italico: " . $tiempoItalico."\n";
echo "Alexis: " . $tiempoAlexis;


Output:
1
2
Italico: 15.43701171875
Alexis: 4.746826171875


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