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 assume k…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 方法一:移除最大值 方法二:排序 方法三:大顶堆 方法四:partition 日期 题目地址:https://leetcode.com/problems/kth-largest-element-in-an-array/description/ 题目描述 Find the kth largest element in an unsorted 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. 题解1:玩赖的写法,直接调用java中的sort函数,之后选取倒数第k个元素,即为所有. public in…

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. Example 1: Input: [3,2,1,5,6,4] and k = 2 Output: 5 Example 2: Input: [3,2,3…

class Solution { public: int quicksort(vector<int>& nums, int start, int end, int k){ int i = start; int j = end; int x = nums[i]; while (i<j){ //快排核心… while (nums[j]<x && i<j) j--; if (i<j) nums[i++] = nums[j]; while (nums[i…

题目链接:https://leetcode.com/problems/kth-largest-element-in-an-array/ 215. Kth Largest Element in an Array My Submissions Question Total Accepted: 43442 Total Submissions: 136063 Difficulty: Medium Find the kth largest element in an unsorted array. Not…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 小根堆 日期 题目地址:https://leetcode.com/problems/kth-largest-element-in-a-stream/description/ 题目描述 Design a class to find the kth largest element in a stream. Note that it is the kth…

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…

Kth Smallest Element in a BST Given a binary search tree, write a function kthSmallest to find the kth smallest element in it. Note: You may assume k is always valid, 1 ≤ k ≤ BST's total elements. Follow up:What if the BST is modified (insert/delete…

传送门 有一个整数数组,请你根据快速排序的思路,找出数组中第K大的数. 给定一个整数数组a,同时给定它的大小n和要找的K(K在1到n之间),请返回第K大的数,保证答案存在. 测试样例: [1,3,5,2,2],5,3 返回:2 note: 注意手写快排的时候: while(i < j) { while(j > i && a[j] > a[left]) j--; while(i < j && a[i] <= a[left]) i++; if(i…