[Tutor] Loop comparison

[Dave Angel]

Alan Gauld wrote:
> "Lie Ryan" <lie.1296 at gmail.com> wrote
>
>>> A friend of mine suggested me to do the next experiment in python 
>>> and Java.
>>> It's a simple program to sum all the numbers from 0 to 1000000000.
>>>
>>> result = i = 0
>>> while i < 1000000000:
>>>     result += i
>>>     i += 1
>>> print result
>>>
>>
>> Are you sure you're not causing Java to overflow here? In Java,
>> Arithmetic Overflow do not cause an Exception, your int will simply wrap
>> to the negative side.
>
> Thats why I asked if he got a float number back.
> I never thought of it just wrapping, I assumed it would convert to 
> floats.
>
> Now that would be truly amusing.
> If Java gives you the wrong answer much faster than Python gives the 
> right one, which is best in that scenario?! :-)
>
> Alan G.
>
It's been years, but I believe Java ints are 64 bits, on a 32bit 
implementation.  Just like Java strings are all unicode.

DaveA