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...
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 1. 2. Example 2: Input: [3,2,3,1,2,4,5,5,6] and k = 4 Output: 4 ...
代码如下: importheapqclassSolution(object):deffindKthLargest(self, nums, k): min_heap = nums[:k] heapq.heapify(min_heap)# create a min-heap whose size is kfornuminnums[k:]:ifnum > min_heap [0]: heapq.heapreplace(min_heap , num)# or use:# heapq.heappushpop(min_heap, num)retu...
https://leetcode.com/problems/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. Note: You may ...
https://leetcode.com/problems/kth-largest-element-in-an-array/ 题目: 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] ...
力扣链接:https://leetcode.com/problems/kth-largest-element-in-an-array/ 博主Grandyang的c++解法:[LeetCode] 215. Kth Largest Element in an Array 数组中第k大的数字 开始的时候我的脑子里产生了很多天马行空的想法,比如用一个queue去重新存放顺序之类的。但是那显然是不合理且乱糟糟的。kth largest,就...
LeetCode 0215. Kth Largest Element in an Array数组中的第K个最大元素【Medium】【Python】【快排】【堆】 Problem LeetCode Find thekth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct element. ...
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 ...
https://leetcode.com/problems/kth-largest-element-in-an-array/description/ 内置排序beat 99%,重新写一下归并和快排比比试试。 自己写的归并排序,beat 40% . 快速排序由于基准点问题第一次直接 TLE. 好吧,修改一下,选取基准点的方法基本是: 1. 取左端或右端。 2. 随机取。 3. 取...
[p]=tmp2 p=i return p } func findKthLargest(nums []int, k int) int { start:=0 end:=len(nums)-1 //实际找的是第k-1小的数 , 因此在这里做了转换 //第k大的数 = 第len-k+1小的数 len=end+1 //然后实际是找第k-1索引处的数 , 因此为end+1-k+1-1 return findKthLargestIn(...