Count to 1B in Ruby, Python, R, JavaScript and C++

Some compilers should be able to optimize the loop away and just display the final value when the code runs.<p>Edit: discussed previously <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=35398298">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=35398298</a>

Results:<p>c++ 1.129 seconds<p>python 41.674 seconds<p>ruby 8.730 seconds<p>R 13.602 seconds<p>js (node) 0.481 seconds<p>What surprises me: Python slower than R and ruby. js faster than c++.