class Solution { public int findNumbers(int[] nums) { return checkEven(nums,0,0); } public int checkEven(int[] nums,int i,int ans){ if(i<nums.length){ int n=0; while(nums[i]>0){ nums[i]/=10; n++; } if(n%2==0){ ans++; } return checkEven(nums,i+1,ans); } return ans; } }
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