Leetcode 1295. Find Numbers with Even Number of Digits

題目

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.

解法思維

先變成字串在看長度判斷

var findNumbers = function(nums) {
    let res=0
    nums.forEach(item => {
        item.toString().length % 2==0?res++:false
    });
    return res
};