[Java/C++/Python] Bit Solution
Explanation\nif n is even, return n << 0\nif n is odd, return n << 1\n\n\n# Complexity\nTime O(1)\nSpace O(1)\n\n\nJava\njava\n    public int smallestEvenMultip
# **Explanation**\nif `n` is even, return `n << 0`\nif `n` is odd, return `n << 1`\n<br>\n\n# **Complexity**\nTime `O(1)`\nSpace `O(1)`\n<br>\n\n**Java**\n```java\n    public int smallestEvenMultiple(int n) {\n        return n << (n & 1);\n    }\n```\n\n**C++**\n```cpp\n    int smallestEvenMultiple(int n) {\n        return n << (n & 1);\n    }\n```\n\n**Python**\n```py\n    def smallestEvenMultiple(self, n):\n        return n << (n & 1)\n```\n
['C', 'Python', 'Java']