That seems like Fopnovals was mutating the input array.

The test out put can be very odd at times, it doesn't always show you the actual input that the function is running on. The hidden tests also do odd things like not mentioned in the description, edge cases are very common.

May want to indicate which version of each language the kata is written in. My solution does not pass in Ruby 2.2 because of the use of a newer proc.

I think this test has unresolved issues.

Help me please! That is not correct kata. Hidden test:
[ -11, -1, 1, 9, -3, -15, -6, -7, -3, 13, 4, 5, 10, 13, -9, -7 ]
input: [-7] - Expected: 1, instead got: 2

But, right is number 2 (-7), and test speek what right - 1. Why?