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Exercises for I am a horse in the land of booleans #1628

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Exercises for I am a horse in the land of booleans #1628

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33 changes: 25 additions & 8 deletions src/i_am_a_horse_in_the_land_of_booleans.clj
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Original file line number Diff line number Diff line change
Expand Up @@ -2,27 +2,44 @@
(:refer-clojure :exclude [boolean]))

(defn boolean [x]
":(")
(if x true false))

(defn abs [x]
":(")
(if (> x 0)
x
(- x)))

(defn divides? [divisor n]
":(")
(== (mod n divisor) 0))

(defn fizzbuzz [n]
":(")
(cond
(divides? 15 n) "gotcha!"
(divides? 3 n) "fizz"
(divides? 5 n) "buzz"
:else ""
))

(defn teen? [age]
":(")
(< 12 age 20))

(defn not-teen? [age]
":(")
(not (teen? age)))

(defn generic-doublificate [x]
":(")
(cond
(number? x) (* 2 x)
(empty? x) nil
(or (list? x) (vector? x)) (* (count x) 2)
:else true
))

(defn leap-year? [year]
":(")
(cond
(divides? 400 year) true
(divides? 100 year) false
(divides? 4 year) true
:else false
))

; '_______'