The first test case is wrong 0 and 21 are triangular numbers too (https://oeis.org/A000217), therefore:
[ 0, 6;
PS: And 0 does not make a pair with every number in this case.
What's wrong with the case x=20 in test suite? Why is y_correct=[ 10 10] ? I cannot pass it.
I don't know why your cheat isn't working, but look closely at what numbers your "for n=1:N" loop generates for that case.
Project Euler: Problem 6, Natural numbers, squares and sums.
Unique values without using UNIQUE function
convert matrix to single column
Return fibonacci sequence do not use loop and condition
Singularity v5 (with apologies to the true hack masters)
Return elements unique to either input
Converting numbers back from extended form
Circular Primes (based on Project Euler, problem 35)
Find the treasures in MATLAB Central and discover how the community can help you!
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Contact your local office