Split String by Spaces Unless '*' Appears

Problem: Split String by Spaces Unless '*' Appears Given a string s, split it into tokens using the following rules: If s does not contain '*': split by one or more spaces ignore empty tokens produced by multiple spaces If s does contain '*': split by the '*' character keep the content on both sides as-is (including spaces) ignore empty tokens produced by consecutive '*' Return the list of tokens. Input (stdin) One line string s (may include spaces and *). Output (stdout) Print m then m lines, each a token. Constraints 1 <= len(s) <= 2e5 Examples Same as the Chinese version. Example Input a bc d Output 3 a bc d