RotateArray

const nums = [1,2,3,4,5,6,7];
let k = 3;

const rotateArray = (nums, k) => {
    let previous = 0, temp = 0;
    k %= nums.length;
    for (let i=0; i < k; i++) {
        previous = nums[nums.length - 1];
        for (let j = 0; j < nums.length; j++) {
            temp = nums[j];
            nums[j] = previous;
            previous = temp;
        }
    }
    return nums;
}
//console.log(rotateArray(nums, k));

const reverse = (array, start, end) => {
    while (start < end) {
        temp = array[start];
        array[start] = array[end];
        array[end] = temp;
        start++;
        end--;
    }
    return array;
}
// console.log(reverse(nums, 0, nums.length-1));

const rotateArray2 = (nums, k) => {
    k %= nums.length;
    console.log(reverse(nums, 0, nums.length-1));
    console.log(reverse(nums, 0, k-1));
    console.log(reverse(nums, k, nums.length-1));
}
console.log(rotateArray2(nums, k));