Problem 109. Check if sorted

Created byAMITAVA BISWAS

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8034 Solutions
4170 Solvers

LastSolutionsubmitted on Jun 21, 2022

Last 200 Solutions

Problem Comments

10 Comments

10 Comments

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Vivekon 30 May 2013

Sort means ascending or descending or both? Not clear

Geoffrey Akienon 7 Jul 2013

I agree! The code is significantly different for those possible cases.

帕斯卡Geschwillon 7 Jan 2014

Unfortunately, way too easy!

Matt Wolinskyon 10 Sep 2014

I agree it's not clear ... but
y = ~var(nonzeros(sign(diff(x))));
works for both ascending/descending cases.
(The test suite clarifies that ascending is the intended case)

Wang Yunheon 16 Mar 2015

y = ~var(nonzeros(sign(diff(x)))); amazing~ ！nice idea

Sam Marshalikon 22 Jan 2016

There is a sort array command in MATLAB.

Muhammad M Saharion 20 Dec 2016

if you are not familiar with array, will be difficult

Gan Wee Tingon 20 Dec 2016

nice

Jack Knollon 6 Apr 2017

hehe

Georgios Stoumpison 13 Jun 2017

The solution "y = issorted(x);" with a metric of 12 is not the leading solution. "Fair Play" is something unknown to cheaters!

Solution Comments

Solution 2051660

Solution 1185914

1 Comment

1 Comment

Informatonon 11 May 2017

Is it supposed to be sorted in ascending or descending order? I'll just pick randomly ...

Solution 1094297

1 Comment

1 Comment

TAYALAN SIVALINGAMon 29 Dec 2016

Solution 1028104

1 Comment

1 Comment

David Verrellion 3 Sep 2018

This user (mohamed elbesealy) appears to have gamed the system, with fraudulent "likes" of this unremarkable solution submitted by 'sock-puppet' accounts. —DIV

Solution 932479

1 Comment

1 Comment

Oliver Pennon 6 Aug 2016

Similar to monotonically increasing problem.

Solution 788198

1 Comment

1 Comment

Alexey Sinitsinon 4 Dec 2015

That was hard

Solution 358715

1 Comment

1 Comment

Marcelon 24 Nov 2013

thank you Emilio

Solution 355411

1 Comment

1 Comment

Emilioon 19 Nov 2013

haha

Solution 327348

1 Comment

1 Comment

Shuoon 2 Oct 2013

Additional sort command takes extra node...

Solution 103932

2 Comments

2 Comments

Norbert Marwanon 2 Sep 2016

The leading solution (solution 103932) is wrong and doesn't work. The error is that the output argument "ans" is not assigned.

Jan Orwaton 2 Sep 2016

@Norbert, this trick worked in Cody before, now it doesn't. I wrote trick, cause it was a way to have a little bit lower Cody size. It was questioned why it's not banned, because it favours bad programming practices, so changes were made.

Solution 59623

2 Comments

2 Comments

Viktoron 11 Mar 2012

Hard one :)

Frequency Domainon 23 Jul 2013

facepalm

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Problem 109. Check if sorted

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Problem 109. Check if sorted

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