k:int)->int:# 将问题转化为寻找第n-k个最小元素k=len(nums)-kdefquickSelect(l,r):pivot,p=nums[r],l# 将小于等于pivot的元素移动到左侧foriinrange(l,r):ifnums[i]<=pivot:nums[p],nums[i]=nums[i],nums[p]p+=1# 将pivot放到正确的位置上nums[p],nums[r]=nums[r],nums[p]# 如果p...
1.问题描述 给定整数数组 nums 和整数 k,请返回数组中第 k 个最大的元素。 请注意,你需要找的是数组排序后的第 k 个最大的元素,而不是第 k 个不同的元素。 2.测试用例 示例 1 输入: [3,2,1,5,6,4] 和 k = 2 输出: 5 示例 2 输入: [3,2,3,1,2,4
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. Example 1: Input: [3,2,1,5,6,4] and k = 2 Output: 5 Example 2: Input: [3,2,3,1,2,4,5,5,6] and k = 4 Output: 4 Note: You...
Leetcode | Kth Largest Element in an Array (数组中的第K个最大元素) Description: 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. Example: Input: [3,2,1,5,6,4] and k = 2 Outpu......
Leetcode-215. Kth Largest Element in an Array(快排) 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. Example 1: Example 2: Note: You may assume k is......
给你一个数组,乱序,让你返回第k个大的数字。比如[3,6,5,6,6] 中第2个大数字 是6,而不是5. 二. 思路 先排序,然后返回从大到小 第k个数值。 其实还可以用优先队列实现,不过时间效率比这个慢。 代码: public int findKthLargest(int[] nums, int k) { int len = nums.length; Arrays.sort(nums...
Kth Largest Element in an Array 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. ...
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] Note: You may assume k is always valid, 1 ≤ k ≤ array's length. ...
详见:https://leetcode.com/problems/kth-largest-element-in-an-array/description/ Java实现: 方法一: AI检测代码解析 class Solution { public int findKthLargest(int[] nums, int k) { int n=nums.length; if(n<k||nums==null){ return -1; ...
来源：力扣（LeetCode）链接：https://leetcode-cn.com/problems/kth-largest-element-in-an-array/著作权归领扣网络所有。商业转载请联系官方授权，非商业转载请注明出处。解法一：数组排序 这里首先考虑的是将原数组排序，从排序后的数组中就可以直接得到第k大的元素，所以具体处理过程如下：首先使用排序算法对该...