problem 1207. Unique Number of Occurrences solution #1: 多个map或者set; code solution #2: 排序判断; code 参考 1.leetcode_1207. Unique Number of Occurrences; 2.cplusplus_map; 完 各美其美,美美与共,不和他人作比较,不对他人有期待,不批判他人,不钻牛角尖。 心正意诚,做自己该做的事情,做自己喜欢...
class Solution { public: bool uniqueOccurrences(vector<int>& arr) { unordered_map<int, int> count; for(auto x : arr) { count[x]++; } unordered_set<int> check; for(auto c : count) { if(check.find(c.second) != check.end()) return false; check.insert(c.second); } return ...
publicbooleanuniqueOccurrences(int[] arr){ Map<Integer, Integer> map =newHashMap<Integer, Integer>();for(intnum : arr) { map.put(num, map.getOrDefault(num,0)+1); } Set<Integer> set =newHashSet<Integer>();for(Integer count : map.values()) {if(set.contains(count)) {returnfalse;...
LeetCode.1207-唯一的元素出现次数(Unique Number of Occurrences) 这是小川的第419次更新,第452篇原创 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第269题(顺位题号是1207)。给定一个整数数组arr,当且仅当该数组中每个元素的出现次数唯一时,返回true。 例如: 输入:arr = [1,2,2,1,1,3] 输出:...
Can you solve this real interview question? Unique Number of Occurrences - Given an array of integers arr, return true if the number of occurrences of each value in the array is unique or false otherwise. Example 1: Input: arr = [1,2,2,1,1,3] Outpu
booluniqueOccurrences(vector<int>&arr) { unordered_map<int,int>record; unordered_set<int>nums; for(auto&c:arr) record[c]++; for(auto&p:record) { if(nums.count(p.second))returnfalse; nums.insert(p.second); } returntrue; } }; ...
0 - This is a modal window. No compatible source was found for this media. Finding number of occurrences of the element appearing most number of times in JavaScript Occurrences After Bigram in Python Python Program to Find the Number of Unique Words in Text File ...
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I am using this formula for Excel 2003 but have found that it is only counting the number of "Jennifers" and not the number of distinct/unique products that she has sold. I wasn't sure whethere the 0 at the end needs to have quotes around it. But either way I get the same result...
Transposable elements (TE) comprise roughly half of the human genome. Though initially derided as junk DNA, they have been widely hypothesized to contribute to the evolution of gene regulation. However, the contribution of TE to the genetic architecture of diseases remains unknown. Here, we analyze...