力扣链接:leetcode.com/problems/k 博主Grandyang的c++解法:[LeetCode] 215. Kth Largest Element in an Array 数组中第k大的数字 开始的时候我的脑子里产生了很多天马行空的想法,比如用一个queue去重新存放顺序之类的。但是那显然是不合理且乱糟糟的。kth largest,就是一个排序问题。这里又一次用到了分治法,...
这个题是在无序数组中找经过排序后的中间位置的值。实际上这个题和Kth Largest Element in an Array差不多,Kth Largest Element in an Array是求第k大,这个题是限定了k是中间位置,并且要求时间复杂度是O(n),所以使用partition的方式就可以。 时间复杂度分析: https://rcoh.me/posts/linear-time-median-findin...
215 Kth Largest Element in an Array # 215 Kth Largest Element in an Array 题目来源: https://leetcode.com/problems/kth-largest-element-in-an-array/description/ 题意分析: 在一个无序链表中找出第k大的元素。 Example 1: Input: [3,2,1,5,6,4] and k = 2 Outp... ...
Kth Largest Element in an Array [leetcode]215. Kth Largest Element in an Array Analysis 好冷鸭~会下雪么—— [每天刷题并不难0.0] Find the kth largest element in an unsorted array. Note that it is the kth largest element in the sorted ord...leetcode_215 Kth Largest Element in an Arr...
Find First and Last Position of Element in Sorted Array leetcode34 Given an array of integers nums sorted in ascending order, find the starting and ending position of a given target value. Your algorithm’s runtime complexity must be in the order of O......
Find First and Last Position of Element in Sorted Array - LeetCode 注意点 nums可能为空 时间复杂度为O(logn) 解法 解法一:最普通的二分搜索,先找到一个target,然后向两边拓展。 class Solution { public: int binarySearch(vector<int>& nums, int target) { int left = 0,right = nums.size()-1;...
You are given an integer array nums, an integer array queries, and an integer x.For each queries[i], you need to find the index of the queries[i]th occurrence of x in the nums array. If there are fewer than queries[i] occurrences of x, the answer should
Given an array of integers nums sorted in ascending order, find the starting and ending position of a given target value. Your algorithm’s runtime complexity must be in the order of O(log n). If the target is not found in the array, return [-1, -1]. ...
7 changes: 6 additions & 1 deletion 7 leetcode-x/find-majority-element/README.md Original file line numberDiff line numberDiff line change @@ -26,4 +26,9 @@ find majority element(主要元素) 来源:力扣(LeetCode) 链接:https://leetcode-cn.com/problems/find-majority-element-lcci 著作权归...
1. Problem Descriptions:Given an array of integers nums sorted in non-decreasing order, find the starting and ending position of a given target value.If target is not found in the array, return [-1…