Linked-List stuff in Coffeescript

linked_list_stuff.coffee

# credit https://www.programwitherik.com/how-to-create-a-linked-list-and-stack-in-javascript-2/ for the LinkedList implementation,
# I just did the recursive remove_duplicates function.

c = console.log.bind console

LinkedList = ->
    @head = null

LinkedList.prototype.push = (val) ->
    node =
        value: val
        next: null

    if not @head
        @head = node
    else
        current = @head
        while current.next
            current = current.next
        current.next = node



lili_1 = new LinkedList()

lili_1.push 3
lili_1.push 34
lili_1.push 292
lili_1.push 1
lili_1.push 3
lili_1.push 15
lili_1.push 24
lili_1.push 1


c lili_1.head


remove_duplicates = (lili) ->
    acc = []
    current = lili.head
    acc.push lili.head.value
    while current.next
        if (acc.indexOf(current.next.value) isnt -1)
            if current.next.next
                current.next = current.next.next
            else
                current.next = null
            remove_duplicates lili
        else
            if current.next
                current = current.next
            else
                lili


enumerate = (lili) ->
    current = lili.head
    while current.next
        c current.value
        current = current.next

enumerate lili_1
remove_duplicates lili_1

c '   ----------------- '
enumerate lili_1