In this kata you will be given two argments: arr which is an array that you will rotate, and k which is the number of times you need to rotate arr. One rotation of an array means taking the element at index 0 and moving it to the end of the array. After performing the rotations, return the array as a string with elements separated by spaces.

Examples:

rotate([1,2,3],2) => '3 1 2'
rotate([2,4,6,8,10,12,14],5) => '12 14 2 4 6 8 10'
rotate([],20) => ''

Additional Notes:

If k is less than a zero, return the array.