[Tutor] Loop comparison

Alan Gauld alan.gauld at btinternet.com
Sat Apr 17 01:51:07 CEST 2010

"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.

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