All problems
Tokenization
Problem
Tokenize text into lowercase alphanumeric tokens.
Lowercase the text, replace any non-alphanumeric non-whitespace character with a space, then split on whitespace.
Test cases
case 1
in: ["Hello, World!"]
expected: ["hello","world"]
case 2
in: ["The quick brown fox."]
expected: ["the","quick","brown","fox"]
case 3
in: ["Don't stop!"]
expected: ["don","t","stop"]
case 4
in: ["One2Three4"]
expected: ["one2three4"]
Starter codePython
def tokenize(text):
# Your code here
pass4 test cases · run your code against them in the editor