/*  This program reads n cards (n= 100), sorts them in
    alphabetical (collating) order and prints them. */

declare n literally '100';
declare cards (n) character, (i,j,k,l) fixed, temp character;

output = 'Input cards:';
do i = 1 to n;
   output, cards(i) = input; /* read and list    */
end;

k,l = n;
do while k <= l;             /* bubble sort loop */
    l = - n;
    do i = 1 to k;
       l = i - 1;
       if cards(l) > cards(i) then
           do;
               temp = cards(l);
               cards(l) = cards(i);
               cards(i) = temp;
               k = l;
           end;
    end;
end;                         /* of sort loop */

output = 'Sorted cards:';
do i = 1 to n;
    output = cards(i);
end;

eof