Programming/코딩 1일 1문제
[leetCode] 1295. Find Numbers with Even Number of Digits (Python)
솜씨좋은장씨
2020. 12. 30. 01:32
728x90
반응형

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] <= 10^5
Solution
class Solution:
def findNumbers(self, nums: List[int]) -> int:
check_list = [len(str(num)) for num in nums if len(str(num)) % 2 == 0]
return len(check_list)
Solution 해설
이 문제는 숫자 리스트를 받으면 짝수자리의 숫자 개수를 return 하는 문제입니다.
check_list에 str로 변환한 숫자의 길이 중 짝수 길이인 값만 남겨두고
최종적으로 check_list의 길이를 return 합니다.



SOMJANG/CODINGTEST_PRACTICE
1일 1문제 since 2020.02.07. Contribute to SOMJANG/CODINGTEST_PRACTICE development by creating an account on GitHub.
github.com