Pseudo random number sequence with non-repeating elements

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.

답변 (1개)

the cyclist
the cyclist 2017년 3월 12일
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

댓글 수: 2

This gives me actually what i need.Bt i'm not sure whether it will work that much fast for large number of elements.
I'm not sure how fast you need. On my machine, this method generated 100,000,000 elements in 7 seconds.

댓글을 달려면 로그인하십시오.

카테고리

도움말 센터File Exchange에서 Loops and Conditional Statements에 대해 자세히 알아보기

질문:

2017년 3월 12일

댓글:

2017년 3월 12일

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by