Conversion into CamelCase
Your mission is to convert the name of a function from the Python format (for example "my_function_name") into CamelCase ("MyFunctionName") where the first char of every word is in uppercase and all words are concatenated without any intervening characters.
Input: A function name as a string (str).
Output: The same string (str), but in CamelCase.
Examples:
assert to_camel_case("my_function_name") == "MyFunctionName"
assert to_camel_case("i_phone") == "IPhone"
How it is used: To apply function names in the style in which they are adopted in a specific language (Python, JavaScript, etc.).
Precondition:
0 < len(string) <= 100
Input data won't contain any numbers.
