const nums = [1,2,3,4,5,6,7] 
const k = 2
const Output =  [5,6,7,1,2,3,4]
//Explanation:
/* rotate 1 steps to the right: [7,1,2,3,4,5,6]
rotate 2 steps to the right: [6,7,1,2,3,4,5]
rotate 3 steps to the right: [5,6,7,1,2,3,4] */

function shiftArr (arr, n=1){
	let r1 = []
  let r2 = []
  
  for(let i = 0 ;i < arr.length; i++){
  	if(i>=arr.length - n ){
        r2.push(arr[i])
    }else{
        r1.push(arr[i])
    }
  }
    return [...r2, ...r1]
  
  
}

console.log(shiftArr(nums, k))