LeetCode 215. Kth Largest Element in an Array

题目描述：

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.

堆排序，我直接用STL了……

class Solution {
public:
    int findKthLargest(vector<int>& nums, int k) {
        partial_sort(nums.begin(), nums.begin() + k, nums.end(), greater<int>());
        return nums[k - 1];
    }
};