importjava.util.Map;importjava.util.HashMap;importjava.util.List;importjava.util.ArrayList;classSolution{publicList<Integer>topKFrequent(int[] nums,intk){// 统计元素的频率Map<Integer, Integer> freqMap =newHashMap<>();for(intnum : nums) { freqMap.put(num, freqMap.getOrDefault(num,0) +1...
3、定义结果数组res,从堆顶循环取值k次,将pair中的second值取出放入res,同时pop掉当前值 代码 // 时间复杂度:O(nlogn)// 空间复杂度:O(n)classSolution{public:vector<int>topKFrequent(vector<int>& nums,intk){//创建unorder_mapunordered_map<int,int>map;//遍历nums,在map中对应位置记录for(inti =0;...
之后,我们返回 items 列表中的前 k个元组的key即可。 3 Python 解题代码 其实小根堆也可以结合 Counter 字典(官方解法一:哈希表+排序),所以我们先演示 Counter。 3.1 Counter - 哈希表+排序 解题代码 ## LeetCode 692E - The K Frequent Word - Counter,字典数据结构 from typing import List from collections...
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. Your algorithm’s time complexity must be better than O(n log...
FindHeaderBarSize FindTabBarSize FindBorderBarSize 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]
heappop(heap)[1] for _ in range(k)] 代码(Go) func topKFrequent(nums []int, k int) []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) numToCnt := make(map[int]int) for _, num := range nums { // num 如果不在 num_to_cnt 中,则...
692. Top K Frequent Words Given an array of stringswordsand an integerk, returnthekmost frequent strings. Return the answersortedbythe frequencyfrom highest to lowest. Sort the words with the same frequency by theirlexicographical order.
[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]
0692 Top K Frequent Words Go 55.2% Medium 0693 Binary Number with Alternating Bits Go 61.2% Easy 0694 Number of Distinct Islands 60.6% Medium 0695 Max Area of Island Go 71.6% Medium 0696 Count Binary Substrings Go 65.5% Easy 0697 Degree of an Array Go 55.8% Easy 0698 Partition ...
692 Top K Frequent Words Medium Solution 693 Binary Number with Alternating Bits Easy Solution 694 Number of Distinct Islands Medium Solution 695 Max Area of Island Medium Solution 696 Count Binary Substrings Easy Solution 697 Degree of an Array Easy Solution 698 Partition to K Equal Sum Subsets...