# 99 questions/Solutions/21

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Insert an element at a given position into a list.

```insertAt :: a -> [a] -> Int -> [a]
insertAt x xs (n+1) = let (ys,zs) = split xs n in ys++x:zs
```

or

```insertAt :: a -> [a] -> Int -> [a]
insertAt x ys     1 = x:ys
insertAt x (y:ys) n = y:insertAt x ys (n-1)
```

There are two possible simple solutions. First we can use `split` from problem 17 (or even `splitAt` from the Prelude) to split the list and insert the element. Second we can define a recursive solution on our own.

As a note to the above solution - this presumes that the inserted argument will be a singleton type a inserted into a list [a]. The lisp example does not infer this intent. As a result, presuming the data to be inserted is likewise of type [a] (which we are tacitly inferring here to be String into String insertion), a solution is:

```insertAt x xs n = take (n-1) xs ++ x ++ drop (n-1) xs
```

This solution, like many others in this quiz presumes counting element positions starts at 1, perhaps causing needless confusion.