Date:         Tue, 26 Apr 2005 22:42:49 -0400
Reply-To:     "Richard A. DeVenezia" <radevenz@IX.NETCOM.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         "Richard A. DeVenezia" <radevenz@IX.NETCOM.COM>
Subject:      Re: find maximum vaule in sas array
Comments: To: sas-l@uga.edu

Jianping Zhu wrote:
> what is array is a temporary array?
> and how to find index of the max?
> THX

A surprisingly simple bubble loop should do it.
If you need to sort the array, search the archives for Dorfman Quicksort.
In version 9 there is also CALL SORTQ() for variable based arrays.

--------------------
data _null_;

  array _x [ 1000000 ] _temporary_;

  do _i = 1 to dim(_x);
    _x[_i] = ranuni(123);
  end;

  * find index where maximum value occurs;
  _imax = .;
  do _i = 1 to dim(_x);
    if _x[_i] > _max then do;
      _max = _x[_i];
      _imax=_i;
    end;
  end;

  put _x[_imax]= _max=;

  stop;
run;
--------------------

Richard A. DeVenezia -- Learn how to customize SAS Explorer
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