【leetcode】1224. Maximum Equal Frequency 题目如下: Given an arraynumsof positive integers, return the longest possible length of an array prefix ofnums, such that it is possible to remove exactly one element from this prefix so that every number that has appeared in it will have the same n...
[LeetCode 1224] Maximum Equal Frequency Given an arraynumsof positive integers, return the longest possible length of an array prefix ofnums, such that it is possible to remove exactly one element from this prefix so that every number that has appeared in it will have the same number of occ...
数据日期:2020/03/26 (此时LeetCode题目数量:1582) 数据来源:LeetCode官方,将不同类别的题目按照官方给的出现频率(Frequency)降序排列,取有频率统计的题。
1classFreqStack {23varfreq: [Int: Int]//num: freq4vargroup: [Int: [Int]]//freq: stack of elements w/ same freq5varmaxFreq: Int67init() {8self.freq =[Int: Int]()9self.group =[Int: [Int]]()10self.maxFreq =011}1213func push(_ x: Int) {14let f = (freq[x] ??0) +1...
题目地址:https://leetcode.com/problems/sort-characters-by-frequency/description/题目描述Given a string, sort it in decreasing order based on the frequency of characters.Example 1:Input: "tree" Output: "eert" Explanation: 'e' appears twice while 'r' and 't' both appear once. So 'e' ...
Design a stack-like data structure to push elements to the stack and pop the most frequent element from the stack. Implement theFreqStackclass: FreqStack()constructs an empty frequency stack. void push(int val)pushes an integervalonto the top of the stack. ...
If after removing one element there are no remaining elements, it's still considered that every appeared number has the same number of ocurrences (0). Example 1: Input: nums = [2,2,1,1,5,3,3,5] Output: 7 Explanation: For the subarray [2,2,1,1,5,3,3] of length 7, if we ...