%!PS

% begin included library code
% see https://codeberg.org/Firedrake/postscript-libraries/
/enumerate.array {
    1 dict begin
    /a exch def
    [
      0 1 a length 1 sub {
          [ exch dup a exch get ]
      } for
    ]
    end
} bind def

/test {
    /test.count test.count 1 add def
    {
        /test.pass test.pass 1 add def
    } {
        ( ) print
        test.count (....) cvs print
        (-fail) print
    } ifelse
} bind def

/test.start {
    print (:) print
    /test.pass 0 def
    /test.count 0 def
} bind def

/test.end {
    ( ) print
    test.count 0 gt {
        (Passed ) print
        test.pass (...) cvs print
        (/) print
        test.count (...) cvs print
        ( \() print
        test.pass 100 mul test.count idiv (...) cvs print
        (%\)) print
        (\r\n) print
    } if
} bind def


% end included library code

/onesandzeroes {
    0 dict begin
    /ones exch def
    /zeroes exch def
    /a exch def
    /ax [
        a {
            /o 0 def
            /n 0 def
            {
                dup 48 eq {
                    /o o 1 add def
                } if
                49 eq {
                    /n n 1 add def
                } if
            } forall
            [ o n ]
        } forall
    ] def
    0
    1 1 1 ax length bitshift 1 sub {
        /mask exch def
        /o 0 def
        /n 0 def
        /ct 0 def
        ax enumerate.array {
            aload pop
            /x exch def
            /i exch def
            mask 1 i bitshift and 0 gt {
                /o o x 0 get add def
                /n n x 1 get add def
                /ct ct 1 add def
                o zeroes gt n ones gt or {
                    exit
                } if
            } if
        } forall
        o zeroes le n ones le and {
            ct max
        } if
    } for
    end
} bind def

(onesandzeroes) test.start
[(10) (0001) (111001) (1) (0)] 5 3 onesandzeroes 4 eq test
[(10) (1) (0)] 1 1 onesandzeroes 2 eq test
test.end