Problem
Take the first letter of each word in full_name, uppercase it, and join the letters. Words are separated by one or more spaces.
Implement initials(full_name).
Input
full_name: A name made of letters and spaces.
Output
Return the initials, for example "ADL".
Constraints
1 ≤ length of full_name ≤ 200; it contains at least one letter
Examples
Example 1
Input:
full_name = "Ada Lovelace"
Expected output:
expected = "AL"
Input:
std::string full_name = "Ada Lovelace";
Expected output:
std::string expected = "AL";
Input:
string full_name = "Ada Lovelace";
Expected output:
string expected = "AL";
Explanation
A from Ada and L from Lovelace: "AL".
Example 2
Input:
full_name = "grace brewster hopper"
Expected output:
expected = "GBH"
Input:
std::string full_name = "grace brewster hopper";
Expected output:
std::string expected = "GBH";
Input:
string full_name = "grace brewster hopper";
Expected output:
string expected = "GBH";
Explanation
Extra spaces don't matter; the initials are uppercased: "GBH".
References
This challenge is adapted for CodeUtility. Follow the statement and constraints above.