Can we assume the string is ASCII?

• Yes
• Note: Unicode strings could require special handling depending on your language

Can we assume this is case sensitive?

• Yes

Can we use additional data structures?

• Yes

Can we assume this fits in memory?

• Yes

Instructions:

Program should be written in file build.py

Function name should be has_unique_chars.

Input

 Type:  String
 Value: 'AbkLCsfjXwZmpdFEo'

Expected Output

  Type:  Boolean
  Value: False.