GelfandsQuestion.frink

Download or view GelfandsQuestion.frink in plain text format


// Solver for "Gelfand'sQuestion"
// http://mathworld.wolfram.com/GelfandsQuestion.html

n=1
a = new array

while true
{
   a@0 = left[toString[2^n], 1]
   a@1 = left[toString[3^n], 1]
   a@2 = left[toString[4^n], 1]
   a@3 = left[toString[5^n], 1]
   a@4 = left[toString[6^n], 1]
   a@5 = left[toString[7^n], 1]
   a@6 = left[toString[8^n], 1]
   a@7 = left[toString[9^n], 1]

   j = join["", a]
   if j == "23456789"
      println["**** $n $j"]

   if length[toSet[a]] == 1
      println["**** $n $j"]
   
   n = n + 1
   if n mod 10000 == 0
      println[n]
}


Download or view GelfandsQuestion.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 19346 days, 23 hours, 43 minutes ago.