How to resolve the algorithm Happy numbers step by step in the Picat programming language

Published on 12 May 2024 09:40 PM

How to resolve the algorithm Happy numbers step by step in the Picat programming language

Table of Contents

Problem Statement

From Wikipedia, the free encyclopedia:

Find and print the first   8   happy numbers. Display an example of your output here on this page.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Happy numbers step by step in the Picat programming language

Source code in the picat programming language

go =>
   println(happy_len(8)).

happy(N) => 
   S = [N],
   Happy = 1,
   while (Happy == 1, N > 1)
     N := sum([to_integer(I)**2 : I in N.to_string()]),
     if member(N,S) then
       Happy := 0
     else
        S := S ++ [N]
     end
   end,
   Happy == 1.

happy_len(Limit) = S => 
   S = [],
   N = 1,
   while (S.length < Limit) 
      if happy(N) then
         S := S ++ [N]
      end,
      N := N + 1
   end.

  

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