How to resolve the algorithm Flatten a list step by step in the Forth programming language

Published on 12 May 2024 09:40 PM
#Forth

How to resolve the algorithm Flatten a list step by step in the Forth programming language

Table of Contents

Problem Statement

Write a function to flatten the nesting in an arbitrary list of values. Your program should work on the equivalent of this list: Where the correct result would be the list:

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Flatten a list step by step in the Forth programming language

Source code in the forth programming language

include FMS-SI.f
include FMS-SILib.f

: flatten {: list1 list2 --  :}
  list1 size: 0 ?do i list1 at: 
                  dup is-a object-list2
                  if list2 recurse else list2 add: then  loop ;

object-list2 list 
o{ o{ 1 } 2 o{ o{ 3 4 } 5 } o{ o{ o{ } } } o{ o{ o{ 6 } } } 7 8 o{ } } 
list flatten
list p: \ o{ 1 2 3 4 5 6 7 8 } ok

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