How do I sort tuples by given element in Julia?

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If I have a list/array of tuples like this: [(15, 36, 39), (9, 40, 41)]

How do I sort these by the first element? By the last element? By their sum?

1 Answers
x=[(15, 36, 39), (9, 40, 41)]
sort(x, by=x->x[1])
sort(x, by=x->x[end])
sort(x, by=sum)

This answer your questions?

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