Pseudo random number sequence with non-repeating elements
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I want to generate a pseudo random number sequence which doesn't repeat any of its elements.
For example,I need 25 elements in that sequence,the values of elements ranges from 1 to 25,and no elements should be repeated.(Actually,the number of elements i need in that sequence is very large).
Also,this sequence should be reconstructable (using a seed) later.
How can i do that?I read about randperm. But i think its not suitable in this case.
Antworten (1)
the cyclist
am 12 Mär. 2017
Why do you think randperm is not what you need? It seems right to me.
rng(1234) % Set a seed for reproducibility
randperm(25) % Generate integers from 1:25, without replacement
2 Kommentare
ANJANA KRISHNAN A
am 12 Mär. 2017
the cyclist
am 12 Mär. 2017
I'm not sure how fast you need. On my machine, this method generated 100,000,000 elements in 7 seconds.
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