2455. Average Value of Even Numbers That Are Divisible by Three
Problem Description:
Given an integer array nums of positive integers, return the average value of all even integers that are divisible by 3.
Note that the average of n elements is the sum of the n elements divided by n and rounded down to the nearest integer.
Example 1:
Input: nums = [1,3,6,10,12,15]
Output: 9
Explanation: 6 and 12 are even numbers that are divisible by 3. (6 + 12) / 2 = 9.
Example 2:
Input: nums = [1,2,4,7,10]
Output: 0
Explanation: There is no single number that satisfies the requirement, so return 0.
Constraints:
1 <= nums.length <= 1000
1 <= nums[i] <= 1000
Solution 1:
class Solution:
def averageValue(self, nums: List[int]) -> int:
tot,cnt = 0,0
for val in nums:
if val%3==0 and val%2==0:
tot+=val
cnt+=1
return tot//cnt if tot>0 else 0
Solution 2:
class Solution:
def averageValue(self, nums: List[int]) -> int:
nums = [n for n in nums if not n%6]
return sum(nums)//len(nums) if nums else 0
