A “LOTTO” SAS for you! or, “Check Your Balls with SAS Arrays” By Keith McWhorter Georgia Technology Authority January 30, 2007

A Mega-Group Effort When Mega-Millions’ Jackpot > $50Mil People in the office put in $1 - $5 each Usually get 75 to 100 tickets Could take a while to check them all!

Ways to Win 5 numbers plus Mega Ball Match only Mega Ball wins small amount Match 1 or more of the first 5 + Mega If Mega doesn’t match – must have at least 3 of the 5 others.

Let SAS Check ‘em! Input file: 01/09/  Draw Date & winning #s …

The Code DATA results(KEEP=ldate w1 w2 w3 w4 w5 w6) ournums(KEEP=d1 d2 d3 d4 d5 d6 flg1 flg2 flg3 flg4 flg5 flg6); INFILE 'SGSS.KEITH.GA010907'; ARRAY WIN[6]2 WIN1-WIN6; *WINNING NUMBERS; ARRAY FLG[6] $ 2FLG1-FLG6; * Match Flags = Y or N; RETAIN WIN1-WIN6;* KEEP WINNING NUMS IN MEMORY ;

First Time Through… IF _N_=1 THEN DO; INPUT ldate MMDDYY10. W1 W2 W3 W4 W5 W6 ; WIN[1] = W1; WIN[2] = W2; WIN[3] = W3; WIN[4] = W4; WIN[5] = W5; WIN[6] = W6; OUTPUT results; END;

Read a set of our numbers & check ELSE DO; INPUT D1 D2 D3 D4 D5 D6; ARRAY OUR[6] 2 D1 D2 D3 D4 D5 D6; * OUR NUMBERS; FLG[6]='N'; IF OUR[6] = WIN[6] THEN FLG[6]='Y';*Mega?; DO I = 1 TO 5; *Loop through other 5; IFOUR[I]=WIN[1] OROUR[I]=WIN[2] OROUR[I]=WIN[3] OROUR[I]=WIN[4] OROUR[I]=WIN[5] THEN FLG[I]='Y'; *Set flag if match; ELSE FLG[I]='N'; END; OUTPUT ournums; *Write it out!; END;

Add Var “x” with # matches DATA wincnt; SET ournums; x=0; IF FLG1 = 'Y' then x+1; IF FLG2 = 'Y' then x+1; IF FLG3 = 'Y' then x+1; IF FLG4 = 'Y' then x+1; IF FLG5 = 'Y' then x+1; run;

Determine Level of Win DATA winlvl; SET wincnt; IF FLG6 = 'Y' then do; * if megaball matches... ; SELECT; WHEN (X = 5)L=1; WHEN (X = 4)L=2; WHEN (X = 3)L=3; WHEN (X = 2)L=4; WHEN (X = 1)L=5; WHEN (X = 0)L=6; END;* end select ; END;* end if ;

Determine level of win… ELSE DO; * megaball does not match ; SELECT; WHEN (X = 5)L=7; WHEN (X = 4)L=8; WHEN (X = 3)L=9; OTHERWISE DELETE; END; * end select; END; * end else; run;

Format the Levels PROC FORMAT; VALUE lvl 1= ' JACKPOT!!' 2= ' 4 + MB' 3= ' 3 + MB' 4= ' 2 + MB' 5= ' 1 + MB' 6= ' 0 + MB' 7= ' 5 of 5' 8= ' 4 of 5' 9= ' 3 of 5' ; RUN;

the Results! FILENAME MY_FILE ) SUBJECT="Group A Results" TYPE="TEXT/HTML" ; RUN; ODS listing close; ODS HTML BODY=MY_FILE;

First the Winning Numbers PROC PRINT data=results noobs split='*'; by ldate; format ldate MMDDYY10.; title 'Results for #byval1'; title2 'Winning Numbers'; var w1 w2 w3 w4 w5 w6; label w1 = '* ' w2 = '* ' w3 = '* ' w4 = '* ' w5 = '* ' w6 = '* ' ldate = ' ' ; run;

Now Print Our Matches PROC PRINT data=winlvl noobs split='*'; title 'Our Winning Numbers'; footnote 'Total Winnings = $6!';*Manual ; format L lvl.; var d1 d2 d3 d4 d5 d6 L; label d1 = '* ' d2 = '* ' d3 = '* ' d4 = '* ' d5 = '* ' d6 = '* ' L= '# of*Matches' ; run; ods html close;

The Resulting

Thank you!