HB <hubaghd...@gmail.com> writes:
> I'm trying to implement searching algorithm for binary tree.
>
> (defrecord Node [data left-child right-child])
>
> (defrecord Tree [root])
>
> (defn find-node [tree data]
> "Search for a node"
> (let [root (:root tree)]
> (loop [current root]
> (if (= data (:data current))
> current
> (cond
> (< data (:data current))
> (> data (:data current)))))))
>
> I don't know to to set/assign a value for current inside cond form.
> Thank you for help and time.
loop should be paired with recur. So something like this (untested):
(defn find-node [tree data]
"Search for a node"
(loop [current (:root tree)]
(cond
(nil? current) nil
(< data (:data current)) (recur (:left-child current))
(> data (:data current)) (recur (:right-child current))
:else current)))
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