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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Doomsday-rule/APL/doomsday-rule.apl Normal file
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weekday←{⎕IO←1
days←'Sunday' 'Monday' 'Tuesday' 'Wednesday' 'Thursday' 'Friday' 'Saturday'
leap←4 7∊⍨2⊥0=4 100 400∘|
ld←4 7 1 4 2 6 4 1 5 3 7 5
nd←3 7 7 4 2 6 4 1 5 3 7 5
y m d←⍵
c←⌊y÷100 ⋄ r←100|y
s←⌊r÷12 ⋄ t←12|r
can←7|2+5×4|c
doom←7|s+t+can+⌊t÷4
anchor←m⊃(1+leap y)⊃nd ld
(1+7|7+doom+d-anchor)⊃days
}