[LeetCode] 1429. First Unique Number You have a queue of integers, you need to retrieve the first unique integer in the queue. Implement theFirstUniqueclass: FirstUnique(int[] nums)Initializes the object with th
public: queue<int>q; unordered_map<int,int>cnt; FirstUnique(vector<int>&nums) { cnt.clear(); intlen=nums.size(); for(inti=0;i<len;i++){ q.push(nums[i]); cnt[nums[i]]++; } } intshowFirstUnique() { while(!q.empty()){ intnow=q.front(); if(cnt[now]>1)q.pop(); e...
代码 class Solution: def largestUniqueNumber(self, A: List[int]) -> int: dic = {} for i in A: if i not in dic: dic[i] = 1 else: dic[i] += 1 maxnum = -1 for key in dic.keys(): if dic[key] == 1: maxnum = max(maxnum, key) return maxnum 分类: LeetCode 标签:...
[leetcode] 1207. Unique Number of Occurrences Description Given an array of integers arr, write a function that returns true if and only if the number of occurrences of each value in the array is unique. Example 1: Input: arr = [1,2,2,1,1,3] Output: true Explanation: The value 1 ...
Return the number of 4-directional walks from the starting square to the ending square, that walk over every non-obstacle square exactly once. 所以不仅要递归,还要把所有能走的格子走一遍。 我们用todo变量表示剩下来要走的格点数量,当前位置和最终位置重合并且todo为0时增加一条结果。 class Solution {...
1. Description Least Number of Unique Integers after K Removals 2. Solution Version 1 classSolution:deffindLeastNumOfUniqueInts(self,arr,k):stat={}fornuminarr:stat[num]=stat.get(num,0)+1result=sorted(stat.items(),key=lambdaitem:item[1])whilek>0:k=k-result[0][1]ifk>=0:result.pop...
Return the number of different transformations among all words we have. Example: Input: words = ["gin", "zen", "gig", "msg"] Output: 2 Explanation: The transformation of each word is: "gin" -> "--...-." "zen" -> "--...-." ...
Write a query in SQL to obtain the name of the patients, their block, floor, and room number where they are admitted Sample table: stay LeetCode Question Permutation Sequence Deion: The set [1,2,3,…,n] contains a total of n! unique permutations. ...
Can you solve this real interview question? Least Number of Unique Integers after K Removals - Given an array of integers arr and an integer k. Find the least number of unique integers after removing exactly k elements. Example 1: Input: arr = [5,5
原文链接[每日 LeetCode] 929. Unique Email Addresses Description: Every email consists of a local name and a domain name, separated by the @ sign. For example, inalice@leetcode.com,aliceis the local name, andleetcode.comis the domain name. ...