hi, can you help me to reverse a string without using REVERSE function?
String 'i just want to play a Game'
Why would you want to avoid using the exact function that does EXACTLY what you want?
Hi,
you can do that for fun, I currently see 2 ways.
data test;
length string $50;
string='i just want to play a Game ';
run;
*use the $reversw. format;
data want;
set test;
string2=put(string,$REVERS32767.);
run;
*Build your reverse string char by char starting from the end;
data want;
set test;
length string2 $50;
retain string2;
string2='';
j=0;
do i=lengthn(string) to 1 by -1;
j+1;
string2=substrn(string2,1,j)||substrn(string,i,1);
put string2=;
end;
run;
- Cheers -
This program does it:
%let str = %str(i just want to play a Game);
%let len = %length(&str);
data _null_;
length str_in str_out $ &len;
str_in = "&str";
do i = 1 to &len;
substr(str_out, i, 1) = substr(str_in, &len + 1 - i, 1);
end;
put str_in= str_out=;
run;
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