JavaScript Internship to CEO Challenge – Challenge #21/54

Task of Challenge #21

Rotate an array to the right 1 position. E.g. [1, 2, 3] -> [ 3, 1, 2 ] | [1, 2, 4, 6, 3] -> [ 3, 1, 2, 4, 6 ].

Solution

Explanation

You can achieve the challenge’s goal quite easily by using the opposites of shift() and the push() method for arrays. This time you have to use the pop() method which removes the last element of an array and returns it. If you store it now into a variable (in this case last) then we can use the unshift() method to push it as the first element of an array.

If you want to dig deeper into pop() and unshift() you can read the Mozilla Dev Notes or take my JavaScript Course, where I introduce you also to all kinds of array methods (there are plenty of them and they are very useful).

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The output for the code above is: