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From: Ben Bacarisse <ben.usenet@bsb.me.uk>
Newsgroups: comp.lang.javascript
Subject: Re: Bignumb addition function, suggestion improvements.
Date: Sun, 15 Mar 2015 11:06:42 +0000
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jonas.thornvall@gmail.com writes:

> Den lördag 14 mars 2015 kl. 14:41:35 UTC+1 skrev Ben Bacarisse:
<snip>
>> function naiveAddX(strOne, strTwo) {
>>     var i1 = strOne.length, i2 = strTwo.length, result = "", carry = 0;
>>     while (i1 > 0 || i2 > 0 || carry > 0) {
>>         var dsum = strOne.digitValueAt(--i1) + strTwo.digitValueAt(--i2) + carry;
>>         if (dsum >= 10) {
>>             dsum -= 10;
>>             carry = 1;
>>         }
>>         else carry = 0;
>>         result = dsum + result;
>>     }
>>     return result;
>> }
<snip>
> I just realised there is things i do not get in your code, i was
> trying to implement reading the array backwards **for
> (i=length-1;i>=0;i--){**
> When i realised they will slide relative eachother, if not padded, but
> i can't see you doing any padding?

I use two indexes and when either goes negative digitValueAt simulates
padded number by returning 0.

-- 
Ben.