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data _null_; array arr[*] v1-v5 (1 2 3 4 5); put "before:" (v1-v5) (= +1); /* reverse the variable list in a new array definition and sort */ array rev[*] v5-v1; call sortn(of rev[*]); put "after :" (v1-v5) (= +1); run; /* on log before: v1=1 v2=2 v3=3 v4=4 v5=5 after : v1=5 v2=4 v3=3 v4=2 v5=1 */
For a detailed discussion on variable lists, see Schreier (2011).
Submitted By chang_y_chung
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