leetcode 215 Kth Largest Element in an Array C++
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帮别人找bug，顺便把这道题做了，用的是快排的方式。
int findKLargestElement(int k, vector<int>& nums, int low, int high) { int left = low; int right = high; int key = nums[left]; while (left < right) { while (left < right && nums[right] < key) --right; nums[left] = nums[right]; while (left < right && nums[left] >= key) ++left; nums[right] = nums[left]; } nums[left] = key; if (left < (k-1)) { return findKLargestElement(k, nums, left+1, high); } else if (left > (k-1)) { return findKLargestElement(k, nums, low, left-1); } else { return key; } } int findKthLargest(vector<int>& nums, int k) { return findKLargestElement(k, nums, 0, nums.size()-1); } 0 0
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