[unix-history] / tests / palindromes.p

program palindromes(output);
  var i,j,l,n,r,s: integer;
      p: boolean;
      d: array [1..10] of integer;
begin n := 0; writeln(clock);
  repeat n := n+1; s := n*n; l := 0;
    repeat l := l+1; r := s div 10;
      d[l] := s - 10*r; s := r
    until s = 0;
    i := 1; j := l;
    repeat p := d[i]=d[j];
      i := i+1; j := j-1
    until (i>=j) or not p;
    if p then writeln(n,n*n)
  until n = 10000;
  writeln(clock)
end .
Commit	Line	Data
fde98a2d BJ	1	program palindromes(output);
	2	var i,j,l,n,r,s: integer;
	3	p: boolean;
	4	d: array [1..10] of integer;
	5	begin n := 0; writeln(clock);
	6	repeat n := n+1; s := n*n; l := 0;
	7	repeat l := l+1; r := s div 10;
	8	d[l] := s - 10*r; s := r
	9	until s = 0;
	10	i := 1; j := l;
	11	repeat p := d[i]=d[j];
	12	i := i+1; j := j-1
	13	until (i>=j) or not p;
	14	if p then writeln(n,n*n)
	15	until n = 10000;
	16	writeln(clock)
	17	end .