**Reflected Binary Code - Amazon Top Interview Questions**

### Problem Statement :

Given an integer n, return the nth (0-indexed) gray code number. Gray code is a way of ordering binary numbers such that each consecutive number's values differ by exactly one bit. The first few gray codes are: [0, 1, 11, 10, 110, 111, ...] Constraints 0 ≤ n ≤ 1,000,000 Example 1 Input n = 3 Output 2

### Solution :

` ````
Solution in C++ :
int solve(int n) {
return n ^ (n >> 1);
}
```

` ````
Solution in Python :
class Solution:
def solve(self, n):
return n ^ (n // 2)
```

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