How can I select rows in an array based on the values in the first row of another array?

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tinkiewinkie
tinkiewinkie 2020-2-4
评论： tinkiewinkie 2020-2-4
Hi suppose I have a column of values like :
How do I select every other row that are not displayed in the rows above in another new array. Example: I will want all other row 1,2,4,5..... excluding row 3, 39,51,15,28,65 and 56.
Please help, Thank you!

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Stephen23
Stephen23 2020-2-4
编辑：Stephen23 2020-2-4
idx = setdiff(1:size(yourarray,1),yourvector)
out = yourarray(idx,:)

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