This is becuase n squared is equal to 144. The sum of 1, 2, 3, 7, 9 all squared gives that solution but 1, 2, 4, 11 does not. It equals 142.

:-)

Thank you very much for your help! I found a typo in my code.

OK. Please be aware that the Random test output my expected values.

For example, the test 5 is saying dogYears=14 means owned for humanYears=0 ([1,0] the 2nd element - e.g. array index 1 is 0), but your solution returned 1

And that is the correct result (14dy -> 0hy) because Kata description says Results are truncated ...

So your solution is incorrect.

Random test 1: catYears=75, dogYears=16 => [14, 1]
Random test 2: catYears=54, dogYears=54 => [9, 8]
Random test 3: catYears=23, dogYears=94 => [1, 16]
Random test 4: catYears=99, dogYears=74 => [20, 12]
Random test 5: catYears=15, dogYears=14 => [1, 0]
arrays first differed at element [1]; expected:< 0> but was:< 1>
In first message I also use copy-paste, but delete tests where there is no 1 at element < 1>

Please cut/paste the console log of your failing random test instead of re-typing it. I don't quite trust what I am looking at...

e.g.

Random test 1: catYears=8, dogYears=95 => [0, 16]
arrays first differed at element [1]; expected:<16> but was:<0>

Java

It seems he only coded in Java so far.

Which language?

All is correct, but the compiler produces this error.
Arrays first differed at element [1]; expected: 0 but was: 1
Random test 4: catYears=7, dogYears=22 => [0, 1]
Random test 20: catYears=100, dogYears=15 => [21, 1]
Random test 67: catYears=61, dogYears=21 => [11, 1]
But 22 -> 1 year
15 -> 1 year
21 -> 1 year

I think it's all about input data, not a program itself.