Given a non-empty array of integers, return thekmost frequent elements. Example 1: Input: nums =[1,1,1,2,2,3], k =2 Output:[1,2] Example 2: Input: nums =[1], k =1 Output:[1] Note: You may assumekis always valid, 1 ≤k≤ number of unique elements. Your algorithm's tim...
你可以假设给定的 k 总是合理的,且 1 ≤ k ≤ 数组中不相同的元素的个数。 你的算法的时间复杂度必须优于O(n log n) , n 是数组的大小。 Note: You may assume k is always valid, 1 ≤ k≤ number of unique elements. Your algorithm's time complexity must be better than O(n log n), ...
Given an integer arraynumsand an integerk, returnthekmost frequent elements. You may return the answer inany order. Example 1: Input:nums = [1,1,1,2,2,3], k = 2Output:[1,2] Example 2: Input:nums = [1], k = 1Output:[1] Constraints: 1 <= nums.length <= 105 -104<= num...
【LeetCode】347. Top K Frequent Elements Given a non-empty array of integers, return the k most frequent elements. Example 1: Input: nums = [1,1,1,2,2,3], k = 2 Output: [1,2] Example 2: Input: nums = [1], k = 1 Output: [1] No......
Leetcode: 347. Top K Frequent Elements Question: Given a non-empty array of integers, return the k most frequent elements. Example 1: Input: nums = [1,1,1,2,2,3], k = 2 Output: [1,2] Solution 1: Priority Queue Time Complexity: Time complex......
LeetCode 【347. Top K Frequent Elements】 Given a non-empty array of integers, return thekmost frequent elements. For example, Given[1,1,1,2,2,3]and k = 2, return[1,2]. 其实最简单的就是想到就是用一个小顶堆实现,如果堆中元素个数小于K,则插入元素,如果大于K,则和堆顶比较,如果大于...
class Solution: def topKFrequent(self, nums: List[int], k: int) -> List[int]: # 统计 nums 中每个数字出现的次数, # 时间复杂度为 O(n) ,空间复杂度为 O(n) num_to_cnt = Counter(nums) #将 num_to_cnt 中的数字及其出现次数收集到数组中, # 时间复杂度为 O(n) ,空间复杂度为 O(n)...
https://leetcode.com/problems/top-k-frequent-elements/ Given a non-empty array of integers, return the k most frequent elements. For example, Given [1,1,1,2,2,3] and k = 2, return [1,2]. Note: You may assume k is always valid, 1 ≤ k ≤ number of unique elements. ...
Leetcode 347. Top K Frequent Elements 0 / 0 / 创建于 5年前 / 之前写的一个很随意的遍历 k 次取最大值,时间复杂度 kn先排序再取的复杂度 nlogn 用最大堆平均复杂度是 nlogkkn>>nlogn>nlogk最大堆 (目前已知最优解)复盘:顺便用 LeetCode 这题的 Testcase 测出了之前写的最大堆 shiftDown 的...
[leetcode] 347. Top K Frequent Elements Description Given a non-empty array of integers, return the k most frequent elements. Example 1: Input: AI检测代码解析 nums = [1,1,1,2,2,3], k = 2 1. Output: AI检测代码解析 [1,2]