WA - Variation (ZCO15002)

help
1

Problem : Variation
My code : https://pastebin.com/0ExKhXDG

Can someone find the error in my code please?

2

I don’t think reverse(a,a+n) built in function exist and moreover u didn’t initialize count to 0.Hope this helps and moreover u can try to optimize ur solution.

3

reverse(a,a+n) exists, GeeksForGeeks has it. Both of what you said does not help.

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4

He’s wrong about std::reverse, but he’s absolutely right about count - you should initialise it to 0.

5

Even after initialising it to zero, I am getting WA… :thinking:

6

Your code fails on the sample testcase.

7

Yes, that is why I am asking what is the wrong logic in my code and how to correct it?

8 
 for(int j = i;

This should probably be i + 1, but that doesn’t fix it. Investigating further …

Edit:

Ah - the line mentioned contains multiple errors: j should be initialised to i + 1, and you should be incrementing j, not i, and testing whether j < n, not i < n :slight_smile: i.e.

for(int j = i + 1; j<N; j++){
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9

So what should I do to the above loop

for (int i=0; i<N; i++){

because you are saying we should not have i<n and not increment i

10

That line’s fine - everything I said was about the for (int j =i; line.

11

Oh okay, thanks a lot, it worked. :grinning:

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