Do u think JK Rowling copied a few from Labyrinth for her HP books? (a re-post)

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I added a new topic before at a wrong category so I'm re-posting it on the right one... here it is: Do u think JK Rowling copied a few from Labyrinth movie for her HP books? If you have read and watched both, you'll see... well, i think yes! you know why? well, ludo's name was also used in the Harry Potter series. JK Rowling named one character as Ludo Bagman. Hogwarts (Sarah calls hoggle as hogwart sometimes) was also mentioned in labyrinth which is the name of the Harry's school. The labyrinth itself was used in the triwizard tournament, the 3rd task. The moving staircase is also another similarity, moving walls, secret passages.. etc. I think she was getting a few ideas from this film. Well, im sure she hav seen labyrinth at least once in her life. I'm not sure, but maybe. so there.. well, what do u think?