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Given a list of sets I want to choose the sets whose elements are in ascending order. I think I need to use: Select[list, crit] for this problem, but I could not set the criteria.

For instance,

I have a list:

list = {{1,4,2,3}, {4,2,3,1}, {1,4,8,9}, {1,3,5,7}, {2,4,6,8}, {2,1,3,5}, {4,8,9,10}, {2,7,9,11,13}, {4,1,7,9}};

From this list, I would like to obtain the list

{{1,4,8,9}, {1,3,5,7}, {2,4,6,8}, {4,8,9,10}, {2,7,9,11,13}}
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  • $\begingroup$ As an alternative Pick[list, LessEqual[##] & @@@ list] $\endgroup$
    – OkkesDulgerci
    Nov 1, 2019 at 17:46

1 Answer 1

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Use OrderedQ:

Select[OrderedQ] @ list

{{1, 4, 8, 9}, {1, 3, 5, 7}, {2, 4, 6, 8}, {4, 8, 9, 10}, {2, 7, 9, 11, 13}}

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