June 2018 Update

Task/Singly-linked-list-Element-insertion/Julia/singly-linked-list-element-insertion.julia

@@ -0,0 +1,21 @@
+function Base.insert!(ll::LinkedList{T}, index::Integer, item::T) where T
+    if index == 1
+        if isempty(ll)
+            return push!(ll, item)
+        else
+            ll.head = Node{T}(item, ll.head)
+        end
+    else
+        nd = ll.head
+        while index > 2
+            if nd.next isa EmptyNode
+                throw(BoundsError())
+            else
+                nd = nd.next
+                index -= 1
+            end
+        end
+        nd.next = Node{T}(item, nd.next)
+    end
+    return ll
+end