Hi monks,

I have subroutine which gets two params
PARAM1 -> <time_stamp> Ex:200504250946
PARAM2 -> <interval> Ex:15 || 30 only

%normalise_with_this =
(
   15 => {
       00 => [ 0 .. 14 ],
       15 => [ 15 .. 29 ],
       30 => [ 30 .. 44 ],
       45 => [ 45 .. 59 ]
         };     
   30 => {
       00 => [ 0 .. 29 ],
       30 => [ 30 .. 59 ]
         };     
);
[download]

The function has to extract the minutes from time_stamp (i,e) substr("200504250946",10,2) which results '46' from the example.
Interval is passed as 15.
from the hash "%normalise_with_this" using interval value I have to acess the first level of hash that is 15 or 30,
in our case I have to access 15.
From this I am able to access the second level of hash with the keys '00','15','30','45'.
In any of the values '46' will be there. In our case key '45' contains, 46 in it. (i,e) "45 .. 59 ".
How to point this efficiently using the above inputs which comes as a param to a function.
So function has to return the key 45.
If minute is 34, then function has to retun 30. because 34 lies in 30 => " 30 .. 44 ".

2006-04-25 Retitled by holli, as per Monastery guidelines
Original title: 'Ideas requested from all monks members'

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