You first need to insert the item
to the end of the array arr
using the method push()
on the array arr
.
And then remove and return
the first element of the array using shift()
method on the array arr
.
- push(): Add items to then end of an array. push() returns the new array length.
- shift(): Remove an item from the beginning of an array. shift() returns the removed item.
- pop(): Remove an item from the end of an array. pop() returns the removed item.
- unshift(): Add items to the beginning of an array. unshift() returns the new array length.