15 lines
345 B
Text
15 lines
345 B
Text
( ( middle3
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= x p
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. @(!arg:? [?p:? [(1/2*!p+-3/2) %?x [(1/2*!p+3/2) ?)
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& !x
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| !arg
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( !p:<3&"is too small"
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| "has even number of digits"
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)
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)
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& 123 12345 1234567 987654321 10001 -10001 -123 -100 100
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-12345 1 2 -1 -10 2002 -2002 0
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: ?L
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& whl'(!L:%?e ?L&out$(middle3$!e))
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&
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);
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