How to find the period comparing two boolean arrays in Java?

I have two boolean arrays, with some pattern in each of them, I need to calculate what is the period.

For the first two array (example 1), the period is 2, since the pattern repeats after that the second position.

In the the next two arrays (example 2) the period is 5 since it repeats the pattern after the fifth.

How would I compare both array, and differntiate when the pattern is met, and I have a correct period.

Thanks.

Example 1, period is 2

F

T

F

T

F

T

F

T

F

T

F

T

F

T

F

T

Example 2, period is 5

F	T	F	T	T	F	T	F	T	T
F	T	F	T	T	F	T	F	T	T