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1421. Find Numbers With Even Number Of Digits

Array Math

Problem - Find Numbers With Even Number Of Digits

Easy

Given an array nums of integers, return how many of them contain an even number of digits.

 

Example 1:

Input: nums = [12,345,2,6,7896]
Output: 2
Explanation: 
12 contains 2 digits (even number of digits). 
345 contains 3 digits (odd number of digits). 
2 contains 1 digit (odd number of digits). 
6 contains 1 digit (odd number of digits). 
7896 contains 4 digits (even number of digits). 
Therefore only 12 and 7896 contain an even number of digits.

Example 2:

Input: nums = [555,901,482,1771]
Output: 1 
Explanation: 
Only 1771 contains an even number of digits.

 

Constraints:

  • 1 <= nums.length <= 500
  • 1 <= nums[i] <= 105

Solutions

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class Solution:
    def findNumbers(self, nums: List[int]) -> int:
        return sum(len(str(val)) % 2 == 0 for val in nums)

Submission Stats:

  • Runtime: 0 ms (100.00%)
  • Memory: 18 MB (33.33%)