DigitalPerfection.frink

View or download DigitalPerfection.frink in plain text format


/** This is a solver for John Conway's "Digital Perfection" puzzle.

    See:
    https://www.quantamagazine.org/three-math-puzzles-inspired-by-john-horton-conway-20201015/
*/


for [a,b,c,d,e,f,g,h,i,j] = array[0 to 9].permute[]
{
   if parseInt["$a$b"] mod 2 == 0
      if parseInt["$a$b$c"] mod 3 == 0
         if parseInt["$a$b$c$d"] mod 4 == 0
            if parseInt["$a$b$c$d$e"] mod 5 == 0
               if parseInt["$a$b$c$d$e$f"] mod 6 == 0
                  if parseInt["$a$b$c$d$e$f$g"] mod 7 == 0
                     if parseInt["$a$b$c$d$e$f$g$h"] mod 8 == 0
                        if parseInt["$a$b$c$d$e$f$g$h$i"] mod 9 == 0
                           if parseInt["$a$b$c$d$e$f$g$h$i$j"] mod 10 == 0
            println["$a $b $c $d $e $f $g $h $i $j"]
}


View or download DigitalPerfection.frink in plain text format


This is a program written in the programming language Frink.
For more information, view the Frink Documentation or see More Sample Frink Programs.

Alan Eliasen was born 18864 days, 11 hours, 11 minutes ago.