Given a list of non-negative integers nums, arrange them such that they form the largest number and return it.
Since the result may be very large, so you need to return a string instead of an integer.
Example 1:
Input: nums = [10,2] Output: "210"
Example 2:
Input: nums = [3,30,34,5,9] Output: "9534330"
Constraints:
1 <= nums.length <= 1000 <= nums[i] <= 109