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Need help writing an if statement involving vectors (2)

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Trevor Zane Simko
评论： Trevor Zane Simko 2015-5-6
I'm given a vector A, this vector contains five random numbers ranging from 1 to 13. I need to write an if statement to dertermine whether or not these numbers are in numerical order.
(meaning that the max(A) and min(4) have a difference of 4. And there are no repeating numbers.)
So the possibilities of A being "true" to my conditions are:
[13 12 11 10 9] [12 11 10 9 8] [11 10 9 8 7 6] [10 9 8 7 6] [9 8 7 6 5] [8 7 6 5 4] [7 6 5 4 3] [6 5 4 3 2] [5 4 3 2 1]
HOWEVER, here's the tricky part... the numbers in the given vector A can be in any order.
Any help appreciated, thank you!

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采纳的回答

KL
KL 2015-5-5
编辑：KL 2015-5-5
issorted(A)
returns true if they are sorted! check here
  2 个评论
KL
KL 2015-5-5
if you really want to use if statements, sort the vector using sort(), then compare the sorted array with your original array (using if).
Trevor Zane Simko
Trevor Zane Simko 2015-5-6
I ended up just using sort() along with some other conditions. Thank you!

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更多回答（1 个）

James Tursa
James Tursa 2015-5-5
Looks like homework to me, so I will just point you in the direction of the following functions:
doc diff
doc all

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