}// 遍历map,用最小堆保存频率最大的k个元素PriorityQueue<Integer> pq =newPriorityQueue<>(newComparator<Integer>() {@Overridepublicintcompare(Integer a, Integer b){returnmap.get(a) - map.get(b); } });// PriorityQueue<Integer> pq = new PriorityQueue<>(// (a, b) -> map.get(a) - m...
# Special considerationsiflen(points)==0:return[]# ParametersmaxHeap=[]ans=[]# Calculate all distance and push K elements to heapforpointinpoints:dist=point[0]*point[0]+point[1]*point[1]iflen(maxHeap)<K:heapq.heappush(maxHeap,(-dist,point))else:ifdist<-maxHeap[0][0]:heapq.heappo...
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] Example 2: Input:nums = [1], k = 1Output:[1] Cons...
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]. Note: You may assumekis always valid, 1 ≤k≤ number of unique elements. Your algorithm's time complexitymust bebetter than O(nlogn), wherenis the...
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. ...
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)...
Top20 3145 大数组元素乘积 https://leetcode.cn/problems/find-products-of-elements-of-big-array/ 大思路并不算难想,先用二分猜答案的思想找到区间内的最小和最大数,然后通过位运算,把区间内所有数的每个二进制位,转化成对应答案的2的幂次。但区间两端不完整的数会让这道题实现极其复杂,比赛时间内调通确...
You may assume that A has enough space (size that is greater or equal to m + n) to hold additional elements from B. The number of elements initialized in A and B are m andn respectively. 【解答】 这道题如果从前往后把 B 归并到 A 的话,每次插入操作都会导致 A 中插入的数后面的所有数...
【题目】Given a non-empty array containing only positive integers, find if the array can be partitioned into two subsets such that the sum of elements in both subsets is equal. Note: Each of the array element will not exceed 100. The array size will not exceed 200. Example 1: ...
LeetCode - Top K Frequent Elements Given a non-empty array of integers,returnthe 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....