How to resolve the algorithm Damm algorithm step by step in the Quackery programming language

Published on 12 May 2024 09:40 PM
#Quackery

How to resolve the algorithm Damm algorithm step by step in the Quackery programming language

Table of Contents

Problem Statement

The Damm algorithm is a checksum algorithm which detects all single digit errors and adjacent transposition errors.

The algorithm is named after H. Michael Damm.

Verify the checksum, stored as last digit of an input.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Damm algorithm step by step in the Quackery programming language

Source code in the quackery programming language

  [ 0 swap witheach
      [ char 0 - dip
          [ table
            [ 0 3 1 7 5 9 8 6 4 2 ]
            [ 7 0 9 2 1 5 4 8 6 3 ]
            [ 4 2 0 6 8 7 1 3 5 9 ]
            [ 1 7 5 0 9 8 3 4 2 6 ]
            [ 6 1 2 3 0 4 5 9 7 8 ]
            [ 3 6 7 4 2 0 9 5 8 1 ]
            [ 5 8 6 9 7 2 0 1 3 4 ]
            [ 8 9 4 5 3 6 2 0 1 7 ]
            [ 9 4 3 8 6 1 7 2 0 5 ]
            [ 2 5 8 1 4 3 6 7 9 0 ] ]
        peek ] ]                      is damm      ( $ --> n )

  [ damm 0 = ]                        is dammvalid ( $ --> b )

  [ dup echo$ say " is "
    dammvalid not if [ say "not " ]
    say "valid." cr ]                 is validate  ( & -->   )

  $ "5724 5725 112946 112949"
  nest$ witheach validate

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