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Why are some challenges so difficult to grasp
http://x404.co.uk/forum/viewtopic.php?f=4&t=14491		 Page 1 of 1
Author:  finlay666 [ Thu Aug 18, 2011 10:11 am ]
Post subject:  Why are some challenges so difficult to grasp
Trying to develop a rounding system that would always round up to the nearest x (50 for example) unless it was a multiple of 50

In a couple of mins I had 3 different solutions and identified the fastest.... yet the dev who it was for still couldnt grasp how it was done

best solution I had:

Code:
if(x % minmultiple ==0)
{
     return x;
}
else
{
     return x + minmultiple - (x % minmultiple)
}
Author:  Fogmeister [ Thu Aug 18, 2011 10:17 am ]
Post subject:  Re: Why are some challenges so difficult to grasp
If you're always rounding up then that's by far the quickest way.

if x = 50 then return = 50.

if x = 51 then return = 51 + 50 - (51 modulo 50)

i.e. 101 - 1 = 100.
Author:  finlay666 [ Thu Aug 18, 2011 10:49 am ]
Post subject:  Re: Why are some challenges so difficult to grasp
Fogmeister wrote:
If you're always rounding up then that's by far the quickest way.


thought so, also allows for passing a bit in an enum of rounding state (forceup/forcedown/default) then can extend into the realms of the if block there :)
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