Unique Characters Function | Dataford Interview Questions

Cvent event administrators may define a compact event code for internal workflows. Write a function that returns whether every character in an event code appears exactly once.

Formal Specification

Implement has_all_unique_characters(code).

Input: code, a Python string.
Output: Return True if no character occurs more than once. Otherwise, return False.
Character comparisons are case-sensitive. For example, A and a are different characters.
Spaces and punctuation are characters and must also be unique if present.

Constraints

0 <= len(code) <= 100,000
code may contain any Python string characters, including Unicode
Character comparisons are case-sensitive
Spaces and punctuation count as characters

Function Signature

def has_all_unique_characters(code):

Your question is Unique Characters Function. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem