How to choose 5 random rows from an array of 8 rows for 10 times and save the 10 results

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tinkiewinkie
tinkiewinkie 2020-3-4
评论： J. Alex Lee 2020-3-4
Hi suppose I have an array of 8 rows as below:
I wish to choose 5 random rows 10 times
Suppose 6,4,8,7,2 is the first random result, how do I save row 6,4,8,7,2 as a input result so that I do not have a different first result if I wish to run the program next time again. And similarly apply it for the rest of the 9 results.

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J. Alex Lee
J. Alex Lee 2020-3-4
编辑：J. Alex Lee 2020-3-4
if order doesn't matter (6,4,8,7,2 is the same as 4,6,8,7,2)
doc nchoosek
if order does matter (6,4,8,7,2 is different from 4,6,8,7,2)
doc perms

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