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:...
我们直接使用 java 提供的排序算法,又因为默认是从小到大排序,所以将倒数第 k 个数返回即可。 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...
1.Problem 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. 题意很简单,找到一个一维数组中的第K大的数并返回。数组中第K大的数也是面试中经常考察的问题。现在就借Leetcode上的这题来详细总结下这个问题的...
class Solution { public: int findKthLargest(vector<int>& nums, int k) { int left = 0,right = nums.size(); while(true){ int pos = partition(nums, left, right); if(pos == k-1) return nums[pos]; if(pos > k-1) right = pos; else left = pos+1; } } int partition(vector<...
In array[1,2,3,4,5], the 1st largest element is5, 2nd largest element is4, 3rd largest element is3and etc. 分析: 使用partion把array分成两组,然后看中间那个数在哪个位置。然后再确定是继续在左半部分找还是在右半部分找。 1 public class Solution { ...
Write a Scala program to compute the average value of an array element except the largest and smallest values. Sample Solution: Scala Code: objectscala_basic{defmain(args:Array[String]):Unit={vararray_nums=Array(5,7,2,4,9);println("Original array:")for(x<-array_nums){print(s"${x},...
You work with an array of JSON objects read from stdin, filter them using JavaScript to produce a results array that is printed to stdout. jsed - jsed is a small command-line utility to add, remove, and search for data in a JSON structure. jshon - Jshon is a JSON parser designed ...
题目地址 https://leetcode.com/problems/kth-largest-element-in-an-array/ 题目分析 这道题希望我们从一个无序的数组中选取第k大的元素。有三种方法。 排序法 这是最直观的方法,需要对数组进行排序,然后返回第k大的元素,即从小到大排好序的数组中的索引为(n-k)的数 (n 是数组的长度)。
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 ...
The disk drive provides a method of adaptively managing a cache segment divided into chunks by defining an unavailable data type to be stored in an element of a chunk array which indicates that the chunk is not available, and defining an available data type to be stored in an element of ...