Counting Bits

Solution.cs

public class Solution {
    public int[] CountBits(int n) {
        if(n == 0) return new int[]{ 0 };
        
        int[] output = new int[n + 1];
        output[0] = 0;
        output[1] = 1;
        
        for(int i = 2; i < output.Length; i++)
        {
            output[i] = output[i%2] + output[i/2];
        }
        
        return output;
    }
}