%!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

/deepeq {
    2 dict begin
    /a exch def
    /b exch def
    a type b type eq {
        a type /dicttype eq {
            a length b length eq {
                <<
                    a {
                        pop
                        true
                    } forall
                    b {
                        pop
                        true
                    } forall
                >>
                true exch
                {
                    pop
                    dup a exch known {
                        dup b exch known {
                            dup a exch get exch b exch get deepeq not {
                                pop false
                            } if
                        } {
                            false
                        } ifelse
                    } {
                        false
                    } ifelse
                } forall
            } {
                false
            } ifelse
        } {
            a type dup /arraytype eq exch /stringtype eq or {
                a length b length eq {
                    true
                    0 1 a length 1 sub {
                        dup a exch get exch b exch get deepeq not {
                            pop false
                            exit
                        } if
                    } for
                } {
                    false
                } ifelse
            } {
                a b eq
            } ifelse
        } ifelse
    } {
        false
    } ifelse
    end
} 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

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

/keys { % dict -> array of dict keys
    [ exch
      {
          pop
      } forall
    ]
} bind def


% end included library code

/v2hm {
    1 dict begin
    /h 0 dict def
    enumerate.array {
        aload pop dup
        h exch known {
            pop pop
        } {
            exch
            h 3 1 roll
            put
        } ifelse
    } forall
    h
    end
} bind def

/minindexsum {
    6 dict begin
    v2hm /bh exch def
    /a exch def
    /ah a v2hm def
    /mi a length bh keys length add def
    [ mark
      a {
          /w exch def
          bh w known {
              /mv ah w get bh w get add def
              mv mi lt {
                  cleartomark
                  mark
                  /mi mv def
              } if
              mv mi eq {
                  w
              } if
          } if
      } forall
    ]
    end
} bind def

(minindexsum) test.start
[(Perl) (Raku) (Love)] [(Raku) (Perl) (Hate)] minindexsum [(Perl) (Raku)] deepeq test
[(A) (B) (C)] [(D) (E) (F)] minindexsum [] deepeq test
[(A) (B) (C)] [(C) (A) (B)] minindexsum [(A)] deepeq test
test.end