题目链接 https://leetcode-cn.com/problems/kth-largest-element-in-a-stream/ 题目内容 设计一个找到数据流中第K大元素的类(class).注意是排序后的第K大元素,不是第K个不同的元素.你的 KthLargest 类需要一个同时接收整数 k 和整数数组nums 的构造器,它包含数据流中的初始元素.每次调用 KthLargest.add,返回当前数据流中第K大的元素. 示例: int k = 3; int[] arr = [4,5,8…

这是悦乐书的第296次更新,第315篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第164题(顺位题号是703).设计一个类来查找流中第k个最大元素.请注意,它是排序顺序中的第k个最大元素,而不是第k个不同元素.KthLargest类有一个构造方法,此构造方法有一个整数k和一个整数数组nums两个参数,它包含来自流的初始元素.对于方法KthLargest.add的每次调用,返回表示流中第k个最大元素的元素.例如: int k = 3; int [] arr = [4…

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…

Kth Largest Element Find K-th largest element in an array. Note You can swap elements in the array Example In array [9,3,2,4,8], the 3th largest element is 4 Challenge O(n) time, O(1) space 原题链接: http://www.lintcode.com/en/problem/kth-largest-element…

注意multiset的一个bug: multiset带一个参数的erase函数原型有两种.一是传递一个元素值,如上面例子代码中,这时候删除的是集合中所有值等于输入值的元素,并且返回删除的元素个数:另外一种是传递一个指向某个元素的iterator,这时候删除的就是这个对应的元素,无返回值. https://www.cnblogs.com/lakeone/p/5600494.html 删除的时候一定不能删除指针,只能删除迭代器 leetcode那个题就是在这个地方出错的: Input: [3,2,3…

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'…

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:…

Design a class to find the kth largest element in a stream. Note that it is the kth largest element in the sorted order, not the kth distinct element. Your KthLargest class will have a constructor which accepts an integer k and an integer array nums,…

Design a class to find the kth largest element in a stream. Note that it is the kth largest element in the sorted order, not the kth distinct element. Your KthLargest class will have a constructor which accepts an integer k and an integer array nums,…

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:…