Write a function findNeedle() that takes an array full of junk but containing one "needle".

After your function finds the needle it should return a message (as a string) that says:

"found the needle at position " plus the index it found the needle, so:

findNeedle(['hay', 'junk', 'hay', 'hay', 'moreJunk', 'needle', 'randomJunk']) should return "found the needle at position 5".

• findNeedle(['3', '123124234', undefined, 'needle', 'world', 'hay', 2, '3', true, false]) should return 'found the needle at position 3'.
• findNeedle(['283497238987234', 'a dog', 'a cat', 'some random junk', 'a piece of hay', 'needle', 'something somebody lost a while ago']) should return 'found the needle at position 5'.
• findNeedle([1,2,3,4,5,6,7,8,8,7,5,4,3,4,5,6,67,5,5,3,3,4,2,34,234,23,4,234,324,324,'needle',1,2,3,4,5,5,6,5,4,32,3,45,54]) should return 'found the needle at position 30'.

function findNeedle(haystack) {
  // your code here
}