2595. Number of Even and Odd Bits

You are given a positive integer n.

Let even denote the number of even indices in the binary representation of n (0-indexed) with value 1.

Let odd denote the number of odd indices in the binary representation of n (0-indexed) with value 1.

Return an integer array answer where answer = [even, odd].

class Solution {
public:
    vector<int> evenOddBit(int n) {
        long long bit = 1;
        int e = 0, o = 0;
        for(long long i = 0; i < 32; i++) {
            if(n & bit) {
                if(i % 2) o += 1;
                else e += 1;
            }
            bit *= 2;
        }
        return {e,o};
    }
};