Advance the Shift Rotation

Intermediate

A duty roster rotates one position each day: whoever was first moves to the back of the queue. Given today’s order, produce tomorrow’s.

Implement `solve(List<String> items)` (non-empty) to return the list rotated left by one (first element moves to the end).

Examples

Input["a", "b", "c", "d"]

Output["b", "c", "d", "a"]

Input["x"]

Output["x"]

Hints

Add everything from index 1 onward, then add index 0 last.

Anonymous Apex

List<String> solve(List<String> items) {
    // return items rotated left by one
    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.