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(defn leap-year? | |
[year] | |
(and (divides? 4 year) | |
(divides? 100 year) | |
(divides? 400 year))) | |
(defn divides? | |
[divisor n] | |
(if (= (mod n divisor) 0) true false)) | |
(leap-year? 100) ;=> false | |
(leap-year? 200) ;=> false | |
(leap-year? 400) ;=> true | |
(leap-year? 12) ;=> true | |
(leap-year? 20) ;=> true | |
(leap-year? 15) |
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