Python / MRI / REE / Rubinius / JRuby / PHP / Node.js Fib Shootout

fib.coffee

fib = (n) ->
	if n < 2
		return n
	else
		return fib(n - 1) + fib(n - 2)

i = 0

while i <= 35
	console.log 'n = ' + i + ' => ' + fib(i)
	i++

fib.js

function fib(n) {
	if (n == 0 || n == 1) {
		return n;
	} else {
		return (fib(n - 1) + fib(n - 2));
	}
}

for(i = 0; i <= 35; i++) {
	console.log('n = ' + i + ' => ' + fib(i));
}

fib.php

<?php

function fib($n) {
  if ($n == 0 || $n == 1) {
    return $n;
  } else {
    return fib($n - 1) + fib($n - 2);
  }
} 

for ($i = 0; $i<36; $i++) {   
  echo "n = " . $i . " => " . fib($i) . "\n";
} 

fib.py

def fib(n):
	if n == 0 or n == 1:
		return n
	else:
		return fib(n - 1) + fib(n - 2)

for i in range(36):
	print "n = %d => %d" % (i, fib(i))

fib.rb

def fib(n)
	if n == 0 || n == 1
		n
	else
		fib(n - 1) + fib(n - 2)
	end
end

36.times do |i|
	puts "n = #{i} => #{fib(i)}"
end

fib2.js

function fib(n) {
	if (n < 2) {
		return n;
	} else {
		return (fib(n - 1) + fib(n - 2));
	}
}

for(i = 0; i <= 35; i++) {
	console.log('n = ' + i + ' => ' + fib(i));
}

fib2.php

<?php

function fib($n) {
  if ($n < 2) {
    return $n;
  } else {
    return fib($n - 1) + fib($n - 2);
  }
} 

for ($i = 0; $i<36; $i++) {   
  echo "n = " . $i . " => " . fib($i) . "\n";
} 

fib2.py

def fib(n):
	if n < 2:
		return n
	else:
		return fib(n - 1) + fib(n - 2)

for i in range(36):
	print "n = %d => %d" % (i, fib(i))

fib2.rb

def fib(n)
	if n < 2
		n
	else
		fib(n - 1) + fib(n - 2)
	end
end

36.times do |i|
	puts "n = #{i} => #{fib(i)}"
end

results.txt

## Python 2.7.2
real	0m20.607s
user	0m19.925s
sys	0m0.078s

## Python 2.7.2 (version 2)
real	0m19.227s
user	0m18.929s
sys	0m0.032s

## Ruby Enterprise Edition, 1.8.7-2011.03
real	0m53.581s
user	0m40.564s
sys	0m0.067s

## Ruby Enterprise Edition, 1.8.7-2011.03 (version 2)
real	0m33.192s
user	0m32.848s
sys	0m0.040s

## PHP 5.3.6
real	0m24.491s
user	0m24.464s
sys	0m0.016s

## PHP 5.3.6 (version 2)
real	0m22.568s
user	0m21.094s
sys	0m0.040s

## Ruby 1.9.2-p290
real	0m12.324s
user	0m12.302s
sys	0m0.012s

## Ruby 1.9.2-p290 (version 2)
real	0m10.543s
user	0m10.346s
sys	0m0.020s

## JRuby 1.6.3
real	0m6.885s
user	0m0.006s
sys	0m0.029s

## JRuby 1.6.3 (version 2)
real	0m3.335s
user	0m0.006s
sys	0m0.027s

## Rubinius 2.0.0pre
real	0m2.754s
user	0m2.718s
sys	0m0.044s

## Rubinius 2.0.0pre (version 2)
real	0m2.414s
user	0m2.488s
sys	0m0.049s

## Node.js 0.4.9
real	0m2.240s
user	0m1.550s
sys	0m0.015s

## Node.js 0.4.9 (version 2)
real	0m1.552s
user	0m1.521s
sys	0m0.015s

## Coffee Script (version 2)
real	0m1.765s
user	0m1.604s
sys	0m0.028s

## It's interesting to see how Rubinius smashes every other Ruby implementation,
## and totally massacres Python 2.7.2. Everyone thinks Node.js is so fast
## (and maybe it is) but Rubinius can really put it to the test. I, for one,
## would much rather write Ruby than JavaScript for most of my application logic.