Pisano period: Difference between revisions
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Thundergnat (talk | contribs) m (→{{header|Perl 6}}: Style tweak, harden against errors. Not necessary for this example but more generally useful) |
m (→{{header|Factor}}: swap over -> tuck) |
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: pisano-period ( m -- n ) |
: pisano-period ( m -- n ) |
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[ 0 1 ] dip [ sq <iota> ] [ ] bi |
[ 0 1 ] dip [ sq <iota> ] [ ] bi |
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'[ drop |
'[ drop tuck + _ mod 2dup [ zero? ] [ 1 = ] bi* and ] |
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find 3nip [ 1 + ] [ 1 ] if* ; |
find 3nip [ 1 + ] [ 1 ] if* ; |
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