Damm algorithm: Difference between revisions
Added Quackery.
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5727 Validates as: False
112946 Validates as: True</pre>
=={{header|Quackery}}==
<lang Quackery> [ 0 swap witheach
[ char 0 - swap
[ 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 ] ]
swap peek ]
0 = ] is damm ( $ --> b )
[ dup echo$ say " is "
damm not if [ say "not " ]
say "valid." cr ] is validate ( & --> )
$ "5724 5725 112946 112949"
nest$ witheach validate</lang>
{{out}}
<pre>5724 is valid.
5725 is not valid.
112946 is valid.
112949 is not valid.</pre>
=={{header|Racket}}==
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