After an online programming quiz, I was contacted by an interview organizer. We set up a Google Docs interview, where I wrote code on Google Docs while on the phone with the interviewer. The process itself was quick and very well organized.

1. Implement code that validates an iPhone password.

A password is inputted as a string. Restrictions:

• Number only
• 8 characters in length.

1. Implement code that validates an Android passcode.

A passcode is inputted as a string. Restrictions:

• Number only
• 4-8 characters only
• Two numbers that are not adjacent cannot be connected unless a number in between is selected previously.

Android passcode grid: 1 2 3 4 5 6 7 8 9

1. Which one is more secure: iPhone or Android?

In other words, what are the numbers of possible combinations for each?