Path: csiph.com!x330-a1.tempe.blueboxinc.net!newsfeed.hal-mli.net!feeder1.hal-mli.net!border3.nntp.dca.giganews.com!Xl.tags.giganews.com!border1.nntp.dca.giganews.com!nntp.giganews.com!local2.nntp.dca.giganews.com!nntp.earthlink.com!news.earthlink.com.POSTED!not-for-mail
NNTP-Posting-Date: Fri, 01 Jul 2011 22:28:20 -0500
Date: Fri, 01 Jul 2011 20:28:07 -0700
From: Patricia Shanahan <pats@acm.org>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.18) Gecko/20110616 Thunderbird/3.1.11
MIME-Version: 1.0
Newsgroups: comp.lang.java.help
Subject: Re: Convert a String to Int: can I use toInt() instead of Integer.parseInt()?
References: <521s0711i3d7bsc8620isi0oiidl91kujq@4ax.com> <ium20j$rg8$1@dont-email.me>
In-Reply-To: <ium20j$rg8$1@dont-email.me>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Message-ID: <IIidnWV4RpbIDZPTnZ2dnUVZ_rmdnZ2d@earthlink.com>
Lines: 30
X-Usenet-Provider: http://www.giganews.com
NNTP-Posting-Host: 70.230.196.78
X-Trace: sv3-pz0QbV3cbVJiLm8bJ73axrxknJw66GG/yvxUqTvzRAkF1MjNRwQA2SKwi0WRD64TmnEt/OauWH+17ia!Vemzu0/O5nh0q9rGlx/sEWSFzuxEVONpzSTobRMEz5RRS6Uw0G49wplC07Is+TdOkXYP/Bu29Fd6!R9Es9WOTmlysJMW91mi7NcuYd1ogVm5VRYU5eQETazewGQ==
X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers
X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly
X-Postfilter: 1.3.40
X-Original-Bytes: 2645
Xref: x330-a1.tempe.blueboxinc.net comp.lang.java.help:806

On 7/1/2011 8:06 PM, Eric Sosman wrote:
> On 7/1/2011 1:53 PM, Thee Chicago Wolf [MVP] wrote:
>>
>> Doing homework for a programming course and we're given a 1000 digit
>> String which we have to convert to integer, load into an array, and
>> then find the largest product of a group of 5 integers. I know I can
>> use the Integer.parseInt( ) method [...]
>
> You'd better hope that most of those digits are zeroes...
>
> It seems likely that the homework assignment is intended to make
> you think about other ways than `int' or even `long' for representing
> integers. Representations that can handle this sort of count-all-the-
> protons-in-the-universe-if-every-actual-proton-were-a-universe-itself
> kind of magnitude. Java provides at least two such things; I think
> you're being encouraged to discover and use one or both of them.
>
>> but I wanted to play around with
>> the toInt() method. From what I can gather, it's essentially the same
>> thing...basically the opposite to the toString() method. So, I've
>> tried a few things and I can't get it to work the way I want.
...
> Check with whoever provided the NumberUtils class. It doesn't
> come with Java; somebody else must have written it.
>

org.apache.commons.lang.math.NumberUtils does have a toInt method, but
it is not particularly useful for this problem, because it returns an int.

Patricia