Leetcode - Find Numbers with Even Number of Digits
https://leetcode.com/problems/find-numbers-with-even-number-of-digits/
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.
func findNumbers(nums []int) int {
result := 0
for _, n := range nums {
if isEven(n) {
result++
}
}
return result
}
func isEven(num int) bool {
result := 0
for num > 0 {
num /= 10
result++
}
return result % 2 == 0
}
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