Find the kth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct element.

For example,
Given [3,2,1,5,6,4] and k = 2, return 5.

Note: 
You may assume k is always valid, 1 ≤ k ≤ array's length.

1 public class Solution {
2     public int findKthLargest(int[] nums, int k) {
3         Arrays.sort(nums);
4         return nums[nums.length-k];
5     }
6 }