6 lines Python code, simple and fast


  • 0
    D
    def encode(self, strs):
        if not strs:
            return None
        return ' * '.join([x.replace("*", "**") for x in strs])
    
    def decode(self, s):
        if s == None:
            return []
        return [x.replace("**", "*") for x in s.split(" * ")]

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