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...
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. Note that it is the kth largest element in the sorted order, not the kth distinct element.
To find the largest element from the array, a simple way is to arrange the elements in ascending order. After sorting, the first element will represent the smallest element, the next element will be the second smallest, and going on, the last element will be the largest element of the arr...
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...
215. Kth Largest Element in an Array 题目大意:给定无序数组求第k大,经典面试题 题目思路:利用快速排序,每次定一个轴,比轴大的放左边,小的放右边,如果左边的数量小于k,则第k大在右边,反之在左边,每次去找就好了 时间复杂度&&空间复杂度:O(n)(需要找的总共次数为n/2+n/4+…+1 = 2n-1...
LeetCode 215. Kth Largest Element in an Array 原题链接在这里:https://leetcode.com/problems/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....
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},...
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)。
image.png 刚开始我想到了冒泡排序,然后就用冒泡排序解了一下,代码如下: classSolution{publicintfindKthLargest(int[]nums,intk){for(inti=0;i<nums.length-1;i++){//外层循环控制排序趟数for(intj=0;j<nums.length-1-i;j++){//内层循环控制每一趟排序多少次if(nums[j]>nums[j+1]){inttemp=nums...
doi:US6065095 ADaniel John SokolovJeffrey L. WilliamsUSUS6065095 Sep 16, 1999 May 16, 2000 Western Digital Corporation Method for memory allocation in a disk drive employing a chunk array and identifying a largest available element for write caching...