215. Kth Largest Element in an Array 题目: 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
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. Example 1: Input:[3,2,1,5,6,4]and k = 2Output:5 Example 2: Input:[3,2,3,1,2,4,5,5,6]and k = 4Output:4 Note: You may assume ...
public int findKthLargest(int[] nums, int k) { Arrays.sort(nums); return nums[nums.length - k]; } 解法二 我们没必要把所有数字正确排序,我们可以借鉴快排中分区的思想,这里不细讲了,大家可以去回顾一下快排。 随机选择一个分区点,左边都是大于分区点的数,右边都是小于分区点的数。左部分的个数记...
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. Credits:...
215. Kth Largest Element in an Array** https://leetcode.com/problems/kth-largest-element-in-an-array/description/ 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, ...
/* * @lc app=leetcode id=215 lang=cpp * * [215] Kth Largest Element in an Array */ // @lc code=start class Solution { public: int findKthLargest(vector<int>& nums, int k) { const auto partition = [&](int l, int r) { const int ind = rand() % (r - l + 1) + l...
2.选择排序 从list中比较所有的选择最大的和最后一个元素交换,重复此动作。 classSolution:deffindKthLargest(self,nums,k):""" :type nums: List[int] :type k: int :rtype: int """foriinrange(k):temp=0forjinrange(len(nums)-i):ifnums[j]>nums[temp]:temp=j ...
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. 该题可以使用基于快速排序分治思想来解决这个问题。第k大数可以等价为第m=nums.length-...
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Given an integer arraynumsand an integerk, returnthekthlargest element in the array. Note that it is thekthlargest element in the sorted order, not thekthdistinct element. Can you solve it without sorting? Example 1: Input:nums = [3,2,1,5,6,4], k = 2Output:5 ...