Java developers

I'm trying to generate an array with random numbers between certain values, that are unique to the other elements in the array, but the last part can't be achieved with my code, ie. sometimes a number is repeated. Can anyone tell me why?

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Thanks in advance

Hi,

I'm in a Java programming course and I have to come up with an idea for a final project. Does anyone have any suggestions? The last project I turned in was a GUI Hangman and earlier I did Tic-Tac-Toe. My class is about to start inheritance.

Thanks!