HardNLPnlp-329

Camel Case Split Tokenizer

Problem

Camel-case splitting inserts a boundary before each uppercase letter that follows a lowercase letter or digit, and before an uppercase letter followed by lowercase when it follows another uppercase.

Given a camelCase or PascalCase identifier, return the lowercased word list.

Hint

Track the current run and flush it at boundaries; treat acronym-to-word transitions correctly.

Test cases

case 1

in: ["camelCaseText"]

expected: ["camel","case","text"]

case 2

in: ["HTTPServer"]

expected: ["http","server"]

case 3

in: ["already"]

expected: ["already"]

Starter codePython

def camel_case_split_tokenizer(identifier):
    # Your code here
    pass

3 test cases · run your code against them in the editor