程序清单:
program chu1; var i,j,k,n,x:integer; b:array[0..100]of integer; begin readln(n); for i:=0 to 100 do b[i]:=0; for i:=1 to n do begin readln(x); b[x]:= 1 end; 2 for i:=0 to 100 do while 3 do begin write( 4 ); k:=k+1; b[i]:=b[i]-1; if 5 then writeln; end; readln; end.