Leetcode – 189. Rotate Array

/**
 * @param {number[]} nums
 * @param {number} k
 * @return {void} Do not return anything, modify nums in-place instead.
 */
var rotate = function(nums, k) {

    let res = [];
    let n = nums.length;


    /*for case [1,2] sorting 3 times is equivalent to sorting 1 times*/
    k = k % n; //to handle cases where k>n 

    for(let i = n-k ;i<n;i++){
        res.push(nums[i])
    }

    for(let i = 0 ;i<n-k;i++){
        res.push(nums[i])
    }
    for (let i = 0; i < n; i++) {
        nums[i] = res[i];
    }
};