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Think analytically... if the first character is there... now you need a test for the second character..

Is it there? What do I do next?
If it's not there... what to do next?

Do you really...

And what if it IS in there?
What should happen then?

This discussion will, if you don't put in some effort...

To solve the problem you need to understand the problem... in the tiniest steps possible.
Set yourself down and think about what has to happen, and in what order to compare the two arrays.

I'll...