Generate the Contact Monogram

Intermediate

An avatar component shows a monogram for each contact: the upper-case first letter of every word in their full name. Produce that monogram.

Implement `solve(String fullName)` (space-separated words) to return the upper-case first letter of each word, concatenated.

Examples

Input"marc benioff"

Output"MB"

Input"john quincy adams"

Output"JQA"

Hints

Split on space; take substring(0,1) of each word and upper-case it.

Anonymous Apex

String solve(String fullName) {
    // return the upper-case initials
    return null;
}

Your code runs in a secure sandbox against multiple hidden test cases. The problem is solved only when every test passes. Each run is isolated and any data changes are rolled back automatically.