12. Quiz N
(similarEnds
)
An array has similar N-ends if the front and back N numbers are
in the reversed order.
Return the largest N value for which an array has the same N-ends.
- N is a positive integer.
- Give 0 if the ends are not similar at all.
Examples:
similarEnds([20,30,40])
=>0
.similarEnds([20,30,4,5,30,20])
=>2
.similarEnds([20,30,40,50,50,40,30,20])
=>8
. The repeating segments overlap.similarEnds([10,20,30,20,10])
=>5
.