1512. Number of Good Pairs 解题方法 先构造计数字典,返回值rat,然后遍历字典根据其中每个数字的出现次数套用公式n(n-1)/2即可。 时间复杂度:O(n) 空间复杂度:O(n) 代码 classSolution:defnumIdenticalPairs(self,nums:List[int])->int:dic,rat=collections.Counter(nums),0forkey in dic.keys():rat+=d...
【leetcode】1512. Number of Good Pairs 题目如下: Given an array of integersnums. A pair(i,j)is calledgoodifnums[i]==nums[j]andi<j. Return the number ofgoodpairs. Example 1: Input: nums = [1,2,3,1,1,3] Output: 4 Explanation: There are 4 good pairs (0,3), (0,4), (3,...
# Create a hashmap to store counts of nums2[j] * k divisor_count = defaultdict(int) # Populate the hashmap with counts of nums2[j] * k for num in nums2: divisor_count[num * k] += 1 good_pairs = 0 # For each number in nums1, find all its divisors and check against the ...
链接:https://leetcode-cn.com/problems/number-of-good-pairs 著作权归领扣网络所有。商业转载请联系官方授权,非商业转载请注明出处。 题解 classSolution{publicintnumIdenticalPairs(int[]nums){Map<Integer,Integer>map=newHashMap<>();for(intnum:nums){map.put(num,map.getOrDefault(num,0)+1);}intres...
Number of Good Pairs 2020-07-15 22:41 − ... 鹅要长大 0 120 相关推荐 [LeetCode 1274] Number of Ships in a Rectangle 2019-12-03 00:38 − (This problem is an interactive problem.) On the sea represented by a cartesian plane, each ship is located at an integer point, ...
链接:https://leetcode-cn.com/problems/number-of-good-pairs 1.给你一个整数数组 nums 。如果一组数字 (i,j) 满足 nums[i] == nums[j] 且 i < j ,就可以认为这是一组 好数对 。返回好数对的数目。 示例1: 输入:nums = [1,2,3,1,1,3] ...
Runtime:1 ms, faster than81.21%of Java online submissions for Number of Good Pairs. Memory Usage:39.7 MB, less than14.56%of Java online submissions for Number of Good Pairs. 整体表现不太好。只能说一般。
题目地址:https://leetcode-cn.com/problems/number-of-good-pairs/ 给你一个整数数组 nums 。 如果一组数字 (i,j) 满足 nums[i] == nums[j] 且 i < j ,就可以认为这是一组 好数对 。 返回好数对的数目。 代码语言:javascript 复制 示例1: ...
1512. Number of Good Pairs # 题目 # Given an array of integers nums. A pair (i,j) is called good if nums[i] == nums[j] and i < j. Return the number of good pairs. Example 1: Input: nums = [1,2,3,1,1,3] Output: 4 Explanation: There are 4 good pairs (0,3
https://leetcode.cn/contest/weekly-contest-399/problems/find-the-number-of-good-pairs-i/ 题意 直接枚举 思路 直接枚举,检测数对是否满足题目要求。 复杂度分析: 时间复杂度:O(mn)。 空间复杂度:O(1)。 代码 class Solution: def numberOfPairs(self, nums1: List[int], nums2: List[int], k: ...