Randomization of array without using rand or any randomize methods

SystemVerilog
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Hi, I am trying to solve the below question.

How to generate an array of unique values without using randomize method or rand.
Please help me with the solution.

Thanks,
Sruthi.

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In reply to sruthikrapa:
This appears to be a homework question based on the fact you have used randomize() in your other questions. So I’ll help but not give you a solution

What you need to do create a loop that generate a random value and pushes it onto a queue. Before pushing the value into the queue, you need to check if the value does not already exist inside the queue. If it does , you need to generate a new random value and try again.

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In reply to sruthikrapa:

You could:

  1. Implement your own pseudo-random number generator algorithm, such as a simple linear feedback shift register.
  2. Use an older Verilog randomization function, such as $urandom.
  3. Obtain a hardware random number generator, such as TrueRNG. Note that using a hardware RNG for verification is oftentimes a bad idea since the random number patterns are almost always unique.